Muscle Contraction Mechanism Fit in the spaces below ta idenoby the st.pdf
•
0 likes•2 views
Muscle Contraction Mechanism Fit in the spaces below ta idenoby the structures lateled by uner in the inages and complese a synopsis of the mechaniam of muscle contacion. The sigral to contract reaches the muscle fber at the (A) The nerve imputse reaches the end of the motor neuron, calted the (B) The (C) (membranous sacs) fuse with the PM of the motor neuron and release (D) the specific neurotransmitter for comminication wath muscies, which diffses across the space between the cells, called the (E). and binds to ( F ) in the PM of the muscle tiber, which intiates a(n) (not pictured) that travels dosn the length of the PM of the muscle fiber and Iravels down turnets from the PM called (G) This stimulates the ( H ) to release (not pictured uniti later) ions. Muscle Contraction Mechanism (continued) Each (J) (the corifactle unt of a muscle fiber) is separated from the next by proten bands. Their shape oves them the name Rows of altemative miscle fibers slide along each other to perlorm a contraction. Wrapping around the outside to form each rov are the thin (L). fibers. In the midde of each roware the thick (M0) fiber5. The ( M ) . fibers attach to the (L) fibers and pull ioward the certer durhg contraction to shorten the length of the (J) If we zoom in on the (L) and (M) protein fbers, to look at how they interact during contraction and relaxation, we see the wo regulatory proteins, called (N) and. (O) fo (L) when the (J) is relaced. When the muscle receives the signal to cortinct. (Q ions rush into the (J) and binds to ( 0 ciusing the (N) to move out of the way and allow the to bind io (L).
Report
Share
Report
Share
Download to read offline
Recommended
Histology of Muscle tissue
There are three main types of muscle tissue: skeletal, cardiac, and smooth muscle. Skeletal muscle is composed of large multinucleated fibers that contract quickly and voluntarily. Cardiac muscle is composed of branched cells connected by intercalated disks that contract involuntarily and rhythmically. Smooth muscle is composed of grouped fusiform cells that contract slowly and involuntarily. Each muscle type has a structure adapted to its function and shows regeneration capacity.
Muscular physiology
Muscle physiology studies muscle function including development, structure, contraction and strength building. A muscle is a bundle of fibers that contract to produce movement, posture and heat. Muscle contractions are caused by nerve impulses that cause calcium ions to be released, activating cross bridges between actin and myosin fibers and causing the muscle to shorten. The sliding filament theory explains muscle contraction through the overlapping and sliding of the actin and myosin filaments.
muscle characterized and short important points
OVERVIEW
Muscle is a tissue characterized by irritability
and contractility. It is composed of elongated cells
called myocytes that contain contractile proteins
organized as cytoplasmic filaments. Muscle cells are
attached to bones and soft tissues, and thereby
accomplish mechanical movements as a consequence
of their contraction (shortening). Traditionally,
three types of muscle tissue are recognized:
skeletal, cardiac, and smooth. Skeletal and
cardiac muscle are classified as striated muscles
based on the appearance of striations that run
perpendicular to the long axis of the cells. The
striations are due to a highly ordered, repetitive
organization of two filamentous contractile proteins
- actin and myosin, which are arranged into thin and
thick filaments, respectively. Smooth muscle lacks
striations due to a less structured, looser
arrangement of its contractile filaments. In muscle
terminology, the sarcolemma refers to the muscle
cell membrane, the sarcoplasm refers to the
cytoplasm, and the sarcoplasmic reticulum
refers to the smooth endoplasmic reticulum.
Lecture6 muscle tissue
There are three main types of muscle tissue: skeletal, cardiac, and smooth muscle. Skeletal muscle consists of cylindrical muscle fibers that contain multiple nuclei. The fibers contain filaments called myofibrils which are made up of thick and thin filaments that give the striated appearance to skeletal muscle. Contraction occurs via the sliding filament model where the overlapping thick and thin filaments slide past each other, shortening the muscle. Calcium released from the sarcoplasmic reticulum binds to troponin, exposing actin binding sites for myosin cross-bridging and contraction.
Muscle Fiber Microanatomy and sliding Filament Model sarcole.pdf
Muscle Fiber Microanatomy and sliding Filament Model sarcolemma. sarcoplasm, rarcoplasmic
ieficul in, T tubulek, myotonhl. setemere, actis 20. What ars the fumctions of plycosomes and
myopobin? 12) Ocicitie and identify on a diagram how the A bands and 1 bandi on a molitent
create the ntrosh 12) Desenbe the structures of the myofiteme. Aso identify H zone, M line and the
2 discs 13) What is the function of the active sites, tropomyesin and troponin on actin? 15) Deline
the word contraction as it relates to a sheletal muscle. 14) What is a triad? 16) Do thick and thin
filaments change their length during a musele contraction? Muscle Fiber Contraction 17) List the 4
steps that must occur for a skeletal muscle to contract. Know that this is a summary of a much
more complicated process called excitation-contraction coupling18) Label the structures at the
neuromuscular junction: axon terminal, synaptic cleft, smaptic vesicles, ACh, junctional folds, ACh
receptors. 19) Describe the events at the NMI starting with the AP ariving at the axon terminal and
ending with the action of acetylcholinesterase. 20) What is E-C Coupling? 21) How does
tropomyosin act to keep a muscle fiber relaxed? 22) During muscle relaxation, are calclum levels
high or low in the sarcoplasm? 23) Describe the 4 steps of the cross bridge cycle.Muscle Fiber
Microanatomy and Sliding Filament Model 8) Can skeletal muscles contain more than one
nucleus? 9) Describe the functions of and identify on a diagram the following muscle fiber
structures: sarcolemma, sarcoplasm, sarcoplasmic reticulum, T tubules, myofibrils, sarcomere,
actin, myosin. 10) What are the functions of glycosomes and myoglobin? 11) Describe and identify
on a diagram how the A bands and I bands on a myofibril create the striated appearance of
skeletal muscle. Also identify H zone, M line and the Z discs. 12) Describe the structures of the
myofilaments actin and myosin. 13) What is the function of the active sites, tropomyosin and
troponin on actin? 14) What is a triad? 15) Define the word contraction as it relates to a skeletal
muscle. 16) Do thick and thin filaments change their length during a muscle contraction? Muscle
Fiber Contraction 17) List the 4 steps that must occur for a skeletal muscle to contract. Know that
this is a summary of a much more complicated process called excitation-contraction coupling. 18)
Label the structures at the neuromuscular junction: axon terminal, synaptic cleft, synaptic vesicles,
ACh, junctional folds, ACh receptors. 19) Describe the events at the NMJ starting with the AP
arriving at the axon terminal and ending with the action of acetylcholinesterase..
Muscular physiology (2)
1) Muscle physiology studies the physical, mechanical, and biochemical aspects of muscles in development, fiber structure, muscle structure, contraction, and strength-building.
2) Skeletal muscles provide movement by contracting in response to nerve signals, prevent unwanted movement through posture, and generate heat as a byproduct of the chemical reactions of muscle contraction.
3) The structure of the myofilaments, which are the force-generating actin and myosin proteins, allows for their function in muscle contraction. The overlapping actin and myosin filaments form hexagonal networks that slide inward upon one another, pulling the muscle fibers shorter.
Excitable tissues skeletal_muscle
The document discusses skeletal muscle and its structure and function. It contains 3 types of muscle: skeletal, smooth, and cardiac. Skeletal muscle is striated, involuntary muscle that moves the body and maintains posture. It develops tension and produces heat. Skeletal muscle fibers are cylindrical, multinucleated cells containing myofibrils with overlapping actin and myosin filaments that slide past each other to cause contraction. Contraction is initiated by calcium release from the sarcoplasmic reticulum in response to action potentials.
Muscle Ppt
The document summarizes the structure and function of the three main types of muscle tissue - skeletal, smooth and cardiac muscle. It describes the key components of skeletal muscle including muscle fibers, sarcomeres and myofilaments. The sliding filament model of muscle contraction is explained, whereby interaction between the thick and thin myofilaments causes sarcomeres to shorten and muscles to contract.
Recommended
Histology of Muscle tissue
There are three main types of muscle tissue: skeletal, cardiac, and smooth muscle. Skeletal muscle is composed of large multinucleated fibers that contract quickly and voluntarily. Cardiac muscle is composed of branched cells connected by intercalated disks that contract involuntarily and rhythmically. Smooth muscle is composed of grouped fusiform cells that contract slowly and involuntarily. Each muscle type has a structure adapted to its function and shows regeneration capacity.
Muscular physiology
Muscle physiology studies muscle function including development, structure, contraction and strength building. A muscle is a bundle of fibers that contract to produce movement, posture and heat. Muscle contractions are caused by nerve impulses that cause calcium ions to be released, activating cross bridges between actin and myosin fibers and causing the muscle to shorten. The sliding filament theory explains muscle contraction through the overlapping and sliding of the actin and myosin filaments.
muscle characterized and short important points
OVERVIEW
Muscle is a tissue characterized by irritability
and contractility. It is composed of elongated cells
called myocytes that contain contractile proteins
organized as cytoplasmic filaments. Muscle cells are
attached to bones and soft tissues, and thereby
accomplish mechanical movements as a consequence
of their contraction (shortening). Traditionally,
three types of muscle tissue are recognized:
skeletal, cardiac, and smooth. Skeletal and
cardiac muscle are classified as striated muscles
based on the appearance of striations that run
perpendicular to the long axis of the cells. The
striations are due to a highly ordered, repetitive
organization of two filamentous contractile proteins
- actin and myosin, which are arranged into thin and
thick filaments, respectively. Smooth muscle lacks
striations due to a less structured, looser
arrangement of its contractile filaments. In muscle
terminology, the sarcolemma refers to the muscle
cell membrane, the sarcoplasm refers to the
cytoplasm, and the sarcoplasmic reticulum
refers to the smooth endoplasmic reticulum.
Lecture6 muscle tissue
There are three main types of muscle tissue: skeletal, cardiac, and smooth muscle. Skeletal muscle consists of cylindrical muscle fibers that contain multiple nuclei. The fibers contain filaments called myofibrils which are made up of thick and thin filaments that give the striated appearance to skeletal muscle. Contraction occurs via the sliding filament model where the overlapping thick and thin filaments slide past each other, shortening the muscle. Calcium released from the sarcoplasmic reticulum binds to troponin, exposing actin binding sites for myosin cross-bridging and contraction.
Muscle Fiber Microanatomy and sliding Filament Model sarcole.pdf
Muscle Fiber Microanatomy and sliding Filament Model sarcolemma. sarcoplasm, rarcoplasmic
ieficul in, T tubulek, myotonhl. setemere, actis 20. What ars the fumctions of plycosomes and
myopobin? 12) Ocicitie and identify on a diagram how the A bands and 1 bandi on a molitent
create the ntrosh 12) Desenbe the structures of the myofiteme. Aso identify H zone, M line and the
2 discs 13) What is the function of the active sites, tropomyesin and troponin on actin? 15) Deline
the word contraction as it relates to a sheletal muscle. 14) What is a triad? 16) Do thick and thin
filaments change their length during a musele contraction? Muscle Fiber Contraction 17) List the 4
steps that must occur for a skeletal muscle to contract. Know that this is a summary of a much
more complicated process called excitation-contraction coupling18) Label the structures at the
neuromuscular junction: axon terminal, synaptic cleft, smaptic vesicles, ACh, junctional folds, ACh
receptors. 19) Describe the events at the NMI starting with the AP ariving at the axon terminal and
ending with the action of acetylcholinesterase. 20) What is E-C Coupling? 21) How does
tropomyosin act to keep a muscle fiber relaxed? 22) During muscle relaxation, are calclum levels
high or low in the sarcoplasm? 23) Describe the 4 steps of the cross bridge cycle.Muscle Fiber
Microanatomy and Sliding Filament Model 8) Can skeletal muscles contain more than one
nucleus? 9) Describe the functions of and identify on a diagram the following muscle fiber
structures: sarcolemma, sarcoplasm, sarcoplasmic reticulum, T tubules, myofibrils, sarcomere,
actin, myosin. 10) What are the functions of glycosomes and myoglobin? 11) Describe and identify
on a diagram how the A bands and I bands on a myofibril create the striated appearance of
skeletal muscle. Also identify H zone, M line and the Z discs. 12) Describe the structures of the
myofilaments actin and myosin. 13) What is the function of the active sites, tropomyosin and
troponin on actin? 14) What is a triad? 15) Define the word contraction as it relates to a skeletal
muscle. 16) Do thick and thin filaments change their length during a muscle contraction? Muscle
Fiber Contraction 17) List the 4 steps that must occur for a skeletal muscle to contract. Know that
this is a summary of a much more complicated process called excitation-contraction coupling. 18)
Label the structures at the neuromuscular junction: axon terminal, synaptic cleft, synaptic vesicles,
ACh, junctional folds, ACh receptors. 19) Describe the events at the NMJ starting with the AP
arriving at the axon terminal and ending with the action of acetylcholinesterase..
Muscular physiology (2)
1) Muscle physiology studies the physical, mechanical, and biochemical aspects of muscles in development, fiber structure, muscle structure, contraction, and strength-building.
2) Skeletal muscles provide movement by contracting in response to nerve signals, prevent unwanted movement through posture, and generate heat as a byproduct of the chemical reactions of muscle contraction.
3) The structure of the myofilaments, which are the force-generating actin and myosin proteins, allows for their function in muscle contraction. The overlapping actin and myosin filaments form hexagonal networks that slide inward upon one another, pulling the muscle fibers shorter.
Excitable tissues skeletal_muscle
The document discusses skeletal muscle and its structure and function. It contains 3 types of muscle: skeletal, smooth, and cardiac. Skeletal muscle is striated, involuntary muscle that moves the body and maintains posture. It develops tension and produces heat. Skeletal muscle fibers are cylindrical, multinucleated cells containing myofibrils with overlapping actin and myosin filaments that slide past each other to cause contraction. Contraction is initiated by calcium release from the sarcoplasmic reticulum in response to action potentials.
Muscle Ppt
The document summarizes the structure and function of the three main types of muscle tissue - skeletal, smooth and cardiac muscle. It describes the key components of skeletal muscle including muscle fibers, sarcomeres and myofilaments. The sliding filament model of muscle contraction is explained, whereby interaction between the thick and thin myofilaments causes sarcomeres to shorten and muscles to contract.
3 Types of Muscle Tissue
Skeletal muscles cause the skeleton to move at joints
They are attached to skeleton by tendons.
Tendons transmit muscle force to the bone.
Tendons are made of collagen fibres & are very strong & stiff
Anatomy
This document provides an overview of the muscular system and covers several key topics:
1) It describes the structure of skeletal muscle from the organ level down to the molecular level, including muscle fibers, sarcomeres, myofibrils, actin, and myosin.
2) It explains the sliding filament theory of muscle contraction and how myosin and actin interact to cause muscle shortening.
3) It outlines the process of muscle contraction and relaxation, including the roles of calcium ions, ATP, and acetylcholine at the neuromuscular junction.
MUSCLES OF MASTICATION.pptx
Anatomy of the masticatory machine. It consists of a fixed and a movable member. The movable member is activated by a series of voluntary muscles, and its efficiency is increased by another set of voluntary muscles that feed the machine.
1001105_Muscle physiology.ppt
Skeletal muscle fibers contain myofibrils which are made up of thin actin filaments and thick myosin filaments. During muscle contraction, the sliding filament mechanism causes the thin filaments to slide inward towards the center of the muscle fiber, shortening the fiber. The myosin cross-bridges attach to actin and undergo a power stroke that pulls the thin filaments inward. Repeated binding and power strokes of the cross-bridges causes sustained shortening of the muscle fiber. Motor neurons stimulate muscle fibers to contract via excitation-contraction coupling, which involves the release of calcium from the sarcoplasmic reticulum in response to an action potential.
Actin, Myosin, and Cell Movement
Actin filaments, usually in association with myosin, are responsible for many types of cell movements. Myosin is the prototype of a molecular motor—a protein that converts chemical energy in the form of ATP to mechanical energy, thus generating force and movement. The most striking variety of such movement is muscle contraction, which has provided the model for understanding actin-myosin interactions and the motor activity of myosin molecules. However, interactions of actin and myosin are responsible not only for muscle contraction but also for a variety of movements of nonmuscle cells, including cell division, so these interactions play a central role in cell biology. Moreover, the actin cytoskeleton is responsible for the crawling movements of cells across a surface, which appear to be driven directly by actin polymerization as well as actin-myosin interactions.
11.2 movement
Skeletons and exoskeletons provide attachment points for muscles and act as levers for movement. Muscles work in antagonistic pairs to move the body. Skeletal muscle cells are multinucleated and contain myofibrils which are made of contracting sarcomeres. Sarcomeres contain actin and myosin filaments; their sliding causes muscle contraction. Calcium ions and regulatory proteins control the filament sliding and thus muscle contraction initiated by motor neuron stimulation.
Broc
Skeletal muscles contract to produce movement in response to nerve signals. Rigor mortis is a temporary stiffening of muscles after death. The four factors influencing muscle contraction strength are joint angle, cross-sectional area, speed of movement, and muscle fiber type. Calcium ions play a key role in muscle excitation, contraction, and relaxation by binding to and unbinding from troponin. Cardiac muscle forms a syncytium of electrically coupled fibers for coordinated pumping, unlike skeletal muscle fibers which taper individually.
Lec25
There are three types of muscle tissue: skeletal, cardiac, and smooth. Skeletal muscle is striated and voluntary, composed of bundles of fibers surrounded by connective tissue layers. Each fiber contains myofibrils which are made up of thin actin and thick myosin filaments in a repeating sarcomere pattern, allowing for contraction. Motor neurons stimulate muscle fibers at the neuromuscular junction, transmitting action potentials that trigger calcium release and excitation-contraction coupling to cause contraction.
The Muscular System
The document summarizes the muscular system. There are three types of muscle tissue: cardiac, smooth, and skeletal muscle. Skeletal muscle is striated and voluntary, attaching to bones to enable movement. It contracts through the sliding filament model, where actin and myosin filaments interact powered by ATP. Motor neurons stimulate muscle fibers at the neuromuscular junction, and calcium ions link electrical signals to contraction. Muscle utilizes creatine phosphate, glycogen, and cellular respiration to fuel contractions and overcome fatigue. Muscular diseases can result from genetic mutations affecting muscle proteins.
Muscle structure and physiology of muscle contractions, types of muscle fibres
Muscle structure and physiology of muscle contractions , membrane excitation, sliding filament mechanism,skeletal muscle energy metabolism
Muscle Tissue.pptx
Muscle tissue is composed of elongated cells called myocytes or muscle fibers. There are three main types of muscle tissue: skeletal, cardiac, and smooth. Skeletal muscle fibers are striated and multinucleated and produce fast, forceful contractions under voluntary control. Cardiac muscle also has striations but the fibers are branched and connected via intercalated discs, producing involuntary, rhythmic contractions. Smooth muscle lacks striations and has slow, involuntary contractions produced by individually contracting fusiform cells.
Physiology of muscle contraction.pptx
The document summarizes the physiology of muscle contraction. It begins with a brief history of muscle research and discoveries. It then discusses the structure and organization of skeletal muscle including sarcomeres, myofilaments, regulatory proteins, cytoskeletal proteins, innervation, and motor units. The document explains the process of muscle contraction including excitation, excitation-contraction coupling, crossbridge cycling, and relaxation. It provides diagrams to illustrate these concepts. In summary, the document provides a comprehensive overview of the anatomy, physiology, and molecular mechanisms underlying skeletal muscle contraction.
Muscular Physiology
The document contains questions and answers about skeletal muscle structure and function. It discusses topics like muscle fiber types, motor units, calcium's role in contraction and relaxation, and factors that influence muscle strength. The questions provide a quiz on key anatomical and physiological concepts in myology.
part 7 A1
This document summarizes the structure and function of the three main types of muscle tissues - skeletal, smooth, and cardiac muscle. It describes the sarcomere as the basic contractile unit of myofibrils composed of thin actin filaments and thick myosin filaments. Contraction occurs via the sliding filament mechanism when myosin cross-bridges attach to and pull on actin filaments, shortening the sarcomere. Key regulatory proteins troponin and tropomyosin prevent contraction in low-calcium conditions by blocking the actin-myosin interaction.
part 7a
This document summarizes the structure and function of the three main types of muscle tissues - skeletal, smooth, and cardiac muscle. It describes the sarcomere as the basic contractile unit of myofibrils composed of thin actin filaments and thick myosin filaments. Contraction occurs via the sliding filament mechanism when myosin cross-bridges attach to and pull on actin filaments, shortening the sarcomere. Key regulatory proteins troponin and tropomyosin prevent contraction in low-calcium conditions by blocking the actin-myosin interaction.
Dr. B Ch 09_lecture_presentation
This document provides an overview of the muscular system with a focus on skeletal muscle tissue and organization. It discusses the three types of muscle tissue, the basic properties of muscle tissues, and the functions and anatomy of skeletal muscles. Key points covered include the structural organization of skeletal muscle from the whole muscle down to the sarcomere level. The document also examines muscle contraction via the sliding filament theory and the roles of actin, myosin, calcium ions and ATP. Motor units, muscle tone, and the differences between fast-twitch and slow-twitch muscle fibers are also summarized.
Lecture 1 muscle tissue
This document summarizes the three types of muscle tissue - skeletal, cardiac, and smooth muscle. It describes the structure and function of skeletal muscle tissue in detail. Skeletal muscle tissue contains bundles of fibers that are made up of myofibrils containing overlapping thin and thick filaments. Contraction occurs via the sliding filament mechanism when myosin cross bridges on the thick filaments pull the thin filaments inward, causing the sarcomeres and overall muscle fiber to shorten. Key proteins involved include actin, myosin, titin, and regulatory proteins like troponin and tropomyosin.
5.Muscle tissue.pptx cell and tissue organization
This document discusses the three main types of muscle tissue: skeletal, cardiac, and smooth muscle. Skeletal muscle is striated and voluntary. It is attached to bones and consists of elongated muscle cells called myofibers. Cardiac muscle is found in the heart and contracts involuntarily. Smooth muscle is located in organs and contracts involuntarily. All muscle tissues contract through the sliding of thin and thick filaments within muscle cells.
Control musculo esqueletico
1. A motor unit consists of a single alpha motor neuron and the muscle fibers it innervates. Motor units allow for graded muscle contraction and varying degrees of muscle force and precision of movement.
2. Gamma motor neurons innervate muscle spindle fibers, called intrafusal fibers, found within muscle spindles. Muscle spindles contain sensory receptors that provide feedback on muscle length and stretch.
3. Contraction of muscle fibers is initiated at the neuromuscular junction where motor neuron axon terminals release acetylcholine, activating receptors on muscle fibers. The sarcoplasmic reticulum then releases calcium ions, triggering the interaction of actin and myosin filaments and muscle contraction.
Ana-physi 6.ppt
The document summarizes the structure and function of the muscular system. It describes the three main types of muscle tissue - skeletal, smooth, and cardiac muscle - and their distinguishing characteristics. It also details the structure of skeletal muscle from the organ level down to the contractile proteins that enable muscle contraction in response to neural stimulation.
My selection of mini project is -Password manager- program that add- e.pdf
My selection of mini project is "Password manager" program that add, edit, display and remove
data.
Add data such as : name , password, code word and email. The program much be in C code
language.
Please provide the C code and a flowchart diagram
Pick an idea for your mini project, prepare a proposal. Your proposal should at least contain the
following sections and subsections: develop the mini project by using C language. c) Design -
Explanation on flowchart and development methodology.
my taxa is bacteria-archea Research News Three (3) or more News Upda.pdf
my taxa is bacteria/archea
Research News Three (3) or more News Updates type articles from sites like futurity.org.
ScienceNews, etc. that summarize peer-reviewed articles and report on diversity, classification,
species discoveries, and species extinctions of your taxa (the WHAT of the research). If you find
ecology or evolution articles, they probably won't work here, so at least record them in your
research log, as they may be used later. These will be shared as News Updates at assigned times.
Videos One or more short videos (about 3 minutes each) from reputable sources that address
diversity, taxonomy or discovery topics. Identify the original source of the video. Organizations
(with a general research focus) Three (3) or more websites or organizations/ researchers involved
in the study of diversity and classification of (parts of) your taxa, the "Who's Who" part of your
research; two of these sites will be navigated and discussed in-depth during your show n tell,
others will get a briefer mention; for the plants, animal and fungi taxa, it will make sense to
arrange these by LOCAL/ REGIONAL, NATIONAL, GLOBAL. Original Research Two (2) or
more scientific, peer-reviewed articles on the topics in Research News; we will want to look at
one figure, graph or table in-depth from this article. One species discovery article and one
phylogenetics article would be ideal. Opinion piece ONE opinion pieces that addresses the ethics
of your topic, and are from a major news source like New York Times or CNN, or are written by
a known authority in the field. Note that these are NOT Futurity articles which report and
summarize research rather than focus on implications of research which may be controversial..
More Related Content
Similar to Muscle Contraction Mechanism Fit in the spaces below ta idenoby the st.pdf
3 Types of Muscle Tissue
Skeletal muscles cause the skeleton to move at joints
They are attached to skeleton by tendons.
Tendons transmit muscle force to the bone.
Tendons are made of collagen fibres & are very strong & stiff
Anatomy
This document provides an overview of the muscular system and covers several key topics:
1) It describes the structure of skeletal muscle from the organ level down to the molecular level, including muscle fibers, sarcomeres, myofibrils, actin, and myosin.
2) It explains the sliding filament theory of muscle contraction and how myosin and actin interact to cause muscle shortening.
3) It outlines the process of muscle contraction and relaxation, including the roles of calcium ions, ATP, and acetylcholine at the neuromuscular junction.
MUSCLES OF MASTICATION.pptx
Anatomy of the masticatory machine. It consists of a fixed and a movable member. The movable member is activated by a series of voluntary muscles, and its efficiency is increased by another set of voluntary muscles that feed the machine.
1001105_Muscle physiology.ppt
Skeletal muscle fibers contain myofibrils which are made up of thin actin filaments and thick myosin filaments. During muscle contraction, the sliding filament mechanism causes the thin filaments to slide inward towards the center of the muscle fiber, shortening the fiber. The myosin cross-bridges attach to actin and undergo a power stroke that pulls the thin filaments inward. Repeated binding and power strokes of the cross-bridges causes sustained shortening of the muscle fiber. Motor neurons stimulate muscle fibers to contract via excitation-contraction coupling, which involves the release of calcium from the sarcoplasmic reticulum in response to an action potential.
Actin, Myosin, and Cell Movement
Actin filaments, usually in association with myosin, are responsible for many types of cell movements. Myosin is the prototype of a molecular motor—a protein that converts chemical energy in the form of ATP to mechanical energy, thus generating force and movement. The most striking variety of such movement is muscle contraction, which has provided the model for understanding actin-myosin interactions and the motor activity of myosin molecules. However, interactions of actin and myosin are responsible not only for muscle contraction but also for a variety of movements of nonmuscle cells, including cell division, so these interactions play a central role in cell biology. Moreover, the actin cytoskeleton is responsible for the crawling movements of cells across a surface, which appear to be driven directly by actin polymerization as well as actin-myosin interactions.
11.2 movement
Skeletons and exoskeletons provide attachment points for muscles and act as levers for movement. Muscles work in antagonistic pairs to move the body. Skeletal muscle cells are multinucleated and contain myofibrils which are made of contracting sarcomeres. Sarcomeres contain actin and myosin filaments; their sliding causes muscle contraction. Calcium ions and regulatory proteins control the filament sliding and thus muscle contraction initiated by motor neuron stimulation.
Broc
Skeletal muscles contract to produce movement in response to nerve signals. Rigor mortis is a temporary stiffening of muscles after death. The four factors influencing muscle contraction strength are joint angle, cross-sectional area, speed of movement, and muscle fiber type. Calcium ions play a key role in muscle excitation, contraction, and relaxation by binding to and unbinding from troponin. Cardiac muscle forms a syncytium of electrically coupled fibers for coordinated pumping, unlike skeletal muscle fibers which taper individually.
Lec25
There are three types of muscle tissue: skeletal, cardiac, and smooth. Skeletal muscle is striated and voluntary, composed of bundles of fibers surrounded by connective tissue layers. Each fiber contains myofibrils which are made up of thin actin and thick myosin filaments in a repeating sarcomere pattern, allowing for contraction. Motor neurons stimulate muscle fibers at the neuromuscular junction, transmitting action potentials that trigger calcium release and excitation-contraction coupling to cause contraction.
The Muscular System
The document summarizes the muscular system. There are three types of muscle tissue: cardiac, smooth, and skeletal muscle. Skeletal muscle is striated and voluntary, attaching to bones to enable movement. It contracts through the sliding filament model, where actin and myosin filaments interact powered by ATP. Motor neurons stimulate muscle fibers at the neuromuscular junction, and calcium ions link electrical signals to contraction. Muscle utilizes creatine phosphate, glycogen, and cellular respiration to fuel contractions and overcome fatigue. Muscular diseases can result from genetic mutations affecting muscle proteins.
Muscle structure and physiology of muscle contractions, types of muscle fibres
Muscle structure and physiology of muscle contractions , membrane excitation, sliding filament mechanism,skeletal muscle energy metabolism
Muscle Tissue.pptx
Muscle tissue is composed of elongated cells called myocytes or muscle fibers. There are three main types of muscle tissue: skeletal, cardiac, and smooth. Skeletal muscle fibers are striated and multinucleated and produce fast, forceful contractions under voluntary control. Cardiac muscle also has striations but the fibers are branched and connected via intercalated discs, producing involuntary, rhythmic contractions. Smooth muscle lacks striations and has slow, involuntary contractions produced by individually contracting fusiform cells.
Physiology of muscle contraction.pptx
The document summarizes the physiology of muscle contraction. It begins with a brief history of muscle research and discoveries. It then discusses the structure and organization of skeletal muscle including sarcomeres, myofilaments, regulatory proteins, cytoskeletal proteins, innervation, and motor units. The document explains the process of muscle contraction including excitation, excitation-contraction coupling, crossbridge cycling, and relaxation. It provides diagrams to illustrate these concepts. In summary, the document provides a comprehensive overview of the anatomy, physiology, and molecular mechanisms underlying skeletal muscle contraction.
Muscular Physiology
The document contains questions and answers about skeletal muscle structure and function. It discusses topics like muscle fiber types, motor units, calcium's role in contraction and relaxation, and factors that influence muscle strength. The questions provide a quiz on key anatomical and physiological concepts in myology.
part 7 A1
This document summarizes the structure and function of the three main types of muscle tissues - skeletal, smooth, and cardiac muscle. It describes the sarcomere as the basic contractile unit of myofibrils composed of thin actin filaments and thick myosin filaments. Contraction occurs via the sliding filament mechanism when myosin cross-bridges attach to and pull on actin filaments, shortening the sarcomere. Key regulatory proteins troponin and tropomyosin prevent contraction in low-calcium conditions by blocking the actin-myosin interaction.
part 7a
This document summarizes the structure and function of the three main types of muscle tissues - skeletal, smooth, and cardiac muscle. It describes the sarcomere as the basic contractile unit of myofibrils composed of thin actin filaments and thick myosin filaments. Contraction occurs via the sliding filament mechanism when myosin cross-bridges attach to and pull on actin filaments, shortening the sarcomere. Key regulatory proteins troponin and tropomyosin prevent contraction in low-calcium conditions by blocking the actin-myosin interaction.
Dr. B Ch 09_lecture_presentation
This document provides an overview of the muscular system with a focus on skeletal muscle tissue and organization. It discusses the three types of muscle tissue, the basic properties of muscle tissues, and the functions and anatomy of skeletal muscles. Key points covered include the structural organization of skeletal muscle from the whole muscle down to the sarcomere level. The document also examines muscle contraction via the sliding filament theory and the roles of actin, myosin, calcium ions and ATP. Motor units, muscle tone, and the differences between fast-twitch and slow-twitch muscle fibers are also summarized.
Lecture 1 muscle tissue
This document summarizes the three types of muscle tissue - skeletal, cardiac, and smooth muscle. It describes the structure and function of skeletal muscle tissue in detail. Skeletal muscle tissue contains bundles of fibers that are made up of myofibrils containing overlapping thin and thick filaments. Contraction occurs via the sliding filament mechanism when myosin cross bridges on the thick filaments pull the thin filaments inward, causing the sarcomeres and overall muscle fiber to shorten. Key proteins involved include actin, myosin, titin, and regulatory proteins like troponin and tropomyosin.
5.Muscle tissue.pptx cell and tissue organization
This document discusses the three main types of muscle tissue: skeletal, cardiac, and smooth muscle. Skeletal muscle is striated and voluntary. It is attached to bones and consists of elongated muscle cells called myofibers. Cardiac muscle is found in the heart and contracts involuntarily. Smooth muscle is located in organs and contracts involuntarily. All muscle tissues contract through the sliding of thin and thick filaments within muscle cells.
Control musculo esqueletico
1. A motor unit consists of a single alpha motor neuron and the muscle fibers it innervates. Motor units allow for graded muscle contraction and varying degrees of muscle force and precision of movement.
2. Gamma motor neurons innervate muscle spindle fibers, called intrafusal fibers, found within muscle spindles. Muscle spindles contain sensory receptors that provide feedback on muscle length and stretch.
3. Contraction of muscle fibers is initiated at the neuromuscular junction where motor neuron axon terminals release acetylcholine, activating receptors on muscle fibers. The sarcoplasmic reticulum then releases calcium ions, triggering the interaction of actin and myosin filaments and muscle contraction.
Ana-physi 6.ppt
The document summarizes the structure and function of the muscular system. It describes the three main types of muscle tissue - skeletal, smooth, and cardiac muscle - and their distinguishing characteristics. It also details the structure of skeletal muscle from the organ level down to the contractile proteins that enable muscle contraction in response to neural stimulation.
Similar to Muscle Contraction Mechanism Fit in the spaces below ta idenoby the st.pdf (20)
Muscle structure and physiology of muscle contractions, types of muscle fibres
Muscle structure and physiology of muscle contractions, types of muscle fibres
More from KOCHHARHOSY
My selection of mini project is -Password manager- program that add- e.pdf
My selection of mini project is "Password manager" program that add, edit, display and remove
data.
Add data such as : name , password, code word and email. The program much be in C code
language.
Please provide the C code and a flowchart diagram
Pick an idea for your mini project, prepare a proposal. Your proposal should at least contain the
following sections and subsections: develop the mini project by using C language. c) Design -
Explanation on flowchart and development methodology.
my taxa is bacteria-archea Research News Three (3) or more News Upda.pdf
my taxa is bacteria/archea
Research News Three (3) or more News Updates type articles from sites like futurity.org.
ScienceNews, etc. that summarize peer-reviewed articles and report on diversity, classification,
species discoveries, and species extinctions of your taxa (the WHAT of the research). If you find
ecology or evolution articles, they probably won't work here, so at least record them in your
research log, as they may be used later. These will be shared as News Updates at assigned times.
Videos One or more short videos (about 3 minutes each) from reputable sources that address
diversity, taxonomy or discovery topics. Identify the original source of the video. Organizations
(with a general research focus) Three (3) or more websites or organizations/ researchers involved
in the study of diversity and classification of (parts of) your taxa, the "Who's Who" part of your
research; two of these sites will be navigated and discussed in-depth during your show n tell,
others will get a briefer mention; for the plants, animal and fungi taxa, it will make sense to
arrange these by LOCAL/ REGIONAL, NATIONAL, GLOBAL. Original Research Two (2) or
more scientific, peer-reviewed articles on the topics in Research News; we will want to look at
one figure, graph or table in-depth from this article. One species discovery article and one
phylogenetics article would be ideal. Opinion piece ONE opinion pieces that addresses the ethics
of your topic, and are from a major news source like New York Times or CNN, or are written by
a known authority in the field. Note that these are NOT Futurity articles which report and
summarize research rather than focus on implications of research which may be controversial..
must use python Task 04 (Cycle Finding)- It was a very hectic day fo.pdf
Dora is tired after traveling the country twice and asks for help determining if her map of city roads contains any cycles. The input will describe a directed graph of N cities and M roads, with each of M lines providing the two cities connected by a bidirectional road. The output should be 'YES' if any cycle is present in the graph, or 'NO' if no cycle exists.
Multiple Cholce Question More abundant leisure increases but it real G.pdf
Multiple Cholce Question More abundant leisure increases but it real GDP. economic welfare;
decreases social welfare; decreases nominal GDP; decreases nominal GDP; leaves unchanged.
Multiple Answers- Patients suffering from Aplastic Anemia often show-.pdf
Multiple Answers: Patients suffering from Aplastic Anemia often show, fatigue, bleeding issues
and an increased risk of infections. Causes of noninherited versions of the disorder are associated
with Please select all that are correct. green tea consuption. exposure to select chemicals,
including DDT. ionizing radiation exposure. viral infections, including EBV (mono) and HIV. a
diet rich in vit B 12 ..
Multiple Answers- Unique features associated with T and B-cells lympho.pdf
Multiple Answers: Unique features associated with T and B-cells lymphocytes include Please
select all that are correct. directly involved with wound repair (cellular patch). being part of the
adaptive immune response and the production of specific antibodies (ex. IgG). being a central
part of the innate immune system. facilitating the transport of O 2 throughout the circulation.
undergoing the process of gene rearrangement..
mu--- H- inainnon af awonte in nrder from oldest (1) to youngest (4)-.pdf
mu... H. inainnon af awonte in nrder from oldest (1) to youngest (4). All of the urnts are
seumtitar , wnon All of the units are sedimentary rocks. 4 (youngest) 3 2 1 (oldest) Question 2 1
pts Which principle of relative age dating did you use to determine the sequence of events in
question \#1? Lateral Continuity Original horizontality Cross cutting relationships Superposition.
MS can eventually lead to axon degeneration because oligodendrocytes p (1).pdf
MS can eventually lead to axon degeneration because oligodendrocytes provide axons. all of
these answers trophic factors and nutrients to components of membranes for regeneration
potential for immune support for In Jan 2022 an environmental factor that may to trigger MS was
identified as exposure to pesticides the diversity of the microbiome infection by Covid -19 all of
these answers infection by the Epstein Barr virus For an action potential (AP) train, the
frequency and duration of the AP train depend primarily on all of these answers the length of the
axon and whether it's in the CNS or PNS the magnitude and duration of summed graded
potentials at the initial segment the activation of voltage gated Na + and K + channels in the
dendrites, cell body and axon the diameter of the axon and whether it is myelinated The
frequency and duration of the APs in an AP train are affected by. the number and duration of
excitatory and inhibitory synaptic inputs (summed synaptic potentials) all of these answers the
resting membrane potential and how excitable the neuron is the branching of dendrites and their
distance from the cell soma the density and characteristics of the voltage gated Na + and K +
channels at the initial segment Single action potentials are limited because they all of these
answers propagate along the axon in only one direction often decay along the axon before
reaching the presynaptic terminus are often too rapid/transient to initiate synaptic transmission in
the presynaptic terminus can't provide information about exactly how much activity occurred in
the neuron that produced them.
Ms- Carol Ramirez is a new resident in a long-term care facility based.pdf
Ms. Carol Ramirez is a new resident in a long-term care facility based in Tucson, Arizona. One
of the recreational therapists at the facility, Curt Swinney, is assigned to do her intake evaluation.
The first thing Curt does is review her chart to leam about her history and her background. He
finds that she is 75 years old, she has been widowed for two years, and in the years since her
husband's death, she has become increasingly confused, demonstrating poor shortterm memory
but adequate long-term memory. Her thoughts appear more disorganized, her speech is
tangential, and her family physician is the one who has recommended that she move into a long-
term care facility. She does not have children, but quasi has a lot of support from friends and
family. After reviewing the chart, Kurt fills in as much information as he can on the BANDI-RT.
He then meets with Ms. Ramirez to fill out the other sections. They meet in the lounge, a noisy
room that has TVs on at a loud volume and where many residents are socializing. On this
particular day, bingo is being played in the room, so there are frequent distractions and loud
shouts from participants. Kurt finds Miss Ramirez it easy to converse with but the information
she provides him from section to section is unreliable and contradictory. Ms. Ramirez indicates
that her primary le'sure interests have been physical and social in nature; however, when he
suggests that they go for a walk toge fier, she refuses, saying. "I hate to walk." He suggests that
they go to exercise group, but she states, "I hate to exercise." She then starts to act aggressively
toward him. 1. Curt shares, Ms. Ramirez's reaction with an attending physician. The physician
states. "Well of course she is: confused. She is 75 years old:" How should Curt respond? 2.
Describe the differences between delirium and dementia. Which do you think Ms. Ramirez is
experiencing? What is your rationale for that choice? 3. What areas of concem may have with
how the assessment was conducted? How may this have impacted the results of the assessment?
4. In addition to the BANDI-RT, what other assessment mentioned in this chapter should Curt
include? Describe the assessment (i.e, what does it assess? what types of questions are asked?
What type of format is used - interview. self-report, etc? How is the assessment scored and
evaluated7). Why do you think this would be a beneficial assessment for Curt to use with Ms,
Ramirez?.
Mr-X an individual is curiously researching to find what type of inves.pdf
Mr.X an individual is curiously researching to find what type of investors invest in what type of
securities. During his research, he has collected information on the types of investments that are
made by institutional investors in the bond markets. He while collecting information from
various sources found that one source that was less genuine than others has negligently uploaded
some wrong information regarding the investments made by various institutional investors in the
bonds markets. Therefore, determine which of the following statement could be true among the
information as stated by the source that was not fully genuine from the options given below:
The life insurance companies invests in government bonds only.
The commercial banks invest in corporate bonds only.
The property and liability insurance companies invest in all types of bonds except in corporate
bonds.
Investment in corporate bonds, treasury and agency securities is done the life insurance
companies.
Ms- Petrie is a second-grade teacher- She realizes influenza season is (1).pdf
Ms. Petrie is a second-grade teacher. She realizes influenza season is about to begin and that flu
shots are given at her school by the school nurse and the local health department. She has never
bothered to get a flu shot and feels it is unnecessary. She also thinks she might get the flu from
the flu shot. She asks you what you think about it..
Mrs- Randazzo is an elderly woman admitted to the hospital from a nurs.pdf
Mrs. Randazzo is an elderly woman admitted to the hospital from a nursing home with a
diagnosis of sepsis secondary to a urinary tract infection (UTI). She has been receiving
piperacillin (Pipracil) for 24 hours and her temperature chart is showing a downward trend. The
lab calls you with the initial results of the blood culture and states that gram-negative rods grew
in two of three culture tubes. Do you need to call the attending physician for a change in
antibiotic? Why or why not?.
Moving to another question will save this response Question 16 Part Ma.pdf
Moving to another question will save this response Question 16 Part Manufacturing attributes do
not include. Major process Operation sequence Major dimensions Material type Stied one of the
siatenenta which is not correct A pary famlly is evlection of parts that postess sinlarites in
poometic shape and sur, or in the procesting alepe used in their mandacharing. Production fow
analyia is a method for idenitying pat lamiles and auboiased machen grovpingh beied on
probuction rosite aheets rather than pat denign dien..
Most of the brightest stars in the sky are Select an answer and submit.pdf
Most of the brightest stars in the sky are Select an answer and submit. For keyboard navigation,
use the up/down arrow keys to select an answer. a relatively hot main-sequence stars that are
relatively close to the Sun. b relatively cool giant stars that are relatively close to the Sun. c
relatively cool main-sequence stars that are relatively far from the Sun. d relatively cool main-
sequence stars that are relativelyclose to the Sun. e giant stars and relatively hot main sequence
stars..
Mr- and Mrs- Faurah- an immierant couple in their early 70 '- have bee.pdf
Mr. and Mrs. Faurah, an immierant couple in their early 70 ', have been living with their oldest
daughter and her husband of 15 vears and their three children. They live in a middle-income
nelehborhood in a suburb of a metropolitan city. Mr. Faurah attended college and Mrs. Faurah is
high school educated. Mr. Faurah worked fulltime, and Mrs. Faurah stayed at home rasing their
children (total of 3) in their native country. They came to the United States after their oldest
daughter became a U.S. citizen following her marriage to her husband, who she met in college.
The Faurahs found Ifife in the United States very different from their native country in Saudi
Arabia and continue to adjust. They are both overall healthy, Mr. Faurah speaks fluent English
and Mrs. Faurah continues to work on the language. Most of their time has been spent taking
care of the grandchildren in the house but the grandchildren have now grown older and their
daughter and her husband have advanced their careers and spend much of their time working.
Mrs. Faurah has been fighting a respiratory Iliness for around 4 weels. She presents to the Urgent
Care. Blood pressure 130/39, RA 20, HR 120, 02 saturation 948 , weleht 155, height 5 3 2
Diagnosis from physician: Pneumonia she is given a prescription, sterolds, and is being sent to
her Primary Care Provider for follow-up in three doys. You are the RN caring for Mrs. Faurah at
the follow-up appointment. Her Blood Pressure is now 132/36, HR 115, HR 100, and 02
saturation is 96% , she states she is feeling much better and the provider has determined her
condition has improved. She is encouraged to follow-up again in two weeks to ensure the
pneumonla has deared up and provided information on where to go/who to call is her condtilion
worsens. Upon additional conversation, Mrs. Faurah states that that she is feeling the loss of her
role/confusion about her ldentity as a mother and as a grandmother due to the independence of
her erandchildren and her daughter. Mrs. Faurah has been an occasional smoker her entire Ilfe;
however, within the last six months she has started to smoke regularly again and is up to K
pack/day. You open her chart and note that she has gained 20 ibs . in the last year. Family history
shows: Maternal grandmother (LS) died at 85 from heart attack Maternal erandfather (W.5.) died
at 66- unkenown reasons Patemal grandmother (S.F) died at 55 from breast cancer, diagnosed at
54 Paternal grandfather (P.F.) died at 78, suffered from diabetes, heart disease, and died in his
sleep Her mother (R.A) died at age 49 from heart disease and had high blood pressure Her father
(R..) died at age 79 from Lung cancer and also had high blood pressure and high cholesterol she
(M.F.) has one brother (F.F.) who is currently alive at age 77 who is obese and has dlabetes Her
last valit to the primary care clinit before the Urgent Care vilit was four years ago where she had
a blood pressure of 120/g3, and she weighed 135, helght was 5 2 3.
Mr and Mrs- Longfoot have been mamed for 52 years- They both have medi.pdf
Mr and Mrs. Longfoot have been mamed for 52 years. They both have medical conditions that
require either refingeratwe of medication or electricity to power medical devices. th has been a
while sinoc thicy visited family down South, so they decided to go on a road trip. Traveling, in
general, required much logistical planning Considering it was winter, they werc certain they
wouldn' be dealing with any inclement heat-related weather, as they had in the past. "Turn that
up, tum that up," repeated Nt. Longfoot. Mrs. Longfoot reached for the TV rempte to turn up the
volume on the local ten oclock news. Breaking Nows appeared across the sereen in bold red
letters. Mr Longfoot gasped. "Oh no, what now?" The deep South was headed for a deep freeze.
The meteorologist sounded as worried as he would when a heat wave or hurricane was coming
This could com. plicate things. Mrs Longloo had long sulfered from skep apnea and her CPAP
(continuous positive airway pressure) machine required electricity to deliver oxygen to her while
slecping. Mr. Longfoot required insulin for his diabetes. Insulin requires refrigeration, and on top
of that. Aluctuation in temperatures can cause it to lose eflectiveness. The local news was
waming ciizens that freezing rain coeald canse power lines to break. Jawing folks without power,
heat, or water. They hud a hatory with health services support in the South, and it wasn' a good
one. Their experience was that when severe weather rolicd in, the infrastructure would fail. They
knew this was no exception and Kaving wasn't an option at this point. The following aight they
woke up shivering, the power had gone out. They were seaying at their sons house, and he
informed them that, not only was the prwer out, but the pipes were also frozen as well "That was
quicke" grumbled Mr. Longfoot. 'I expected that ne would at lext make it through the night
belore this happened: They looked aruend at each other, their clectric powered medical
maxhines, and the relingerator they relied on to survive and wondered what they were going to
do At home, in times like this, they could call their home health service and request back up
power and coolers. They had no such plan in the South. They called every hotel in the large
urban city to try and find a place with power, heat, and water, as they learned they were now
under a water boil warning on top of everything else. Eventually, they were able to secure a
room, but it wasnt for a lew more days. Plus, they werent even sure of the road conditions to get
there. Finding food was the nexa big hurdle. They had some, but nothing they could eat without
cooking. By this point, every grocery store in the town was closed for several reasons including
road conditions that kept employees from driving, lack of supplies, and loss of power. Most
places couldnt even process cach transactions. Over the next three days, their situation escalated.
Mrs. Longfoot slept up-right in a recliner to try and mitigate breathing.
MPI Incorporated has $3 billion in assets- and its tax rate is 25-- It.pdf
MPI Incorporated has $3 billion in assets, and its tax rate is 25%. Its basic earning power (BEP) ratio
is 14%, and its return on assets (ROA) is 6%. What is MPI's times-interest-earned (TIE) ratio? Do not
round intermediate calculations. Round your answer to two decimal places..
mplete the following paragraph to explain the location and function of.pdf
mplete the following paragraph to explain the location and function of the parts of a flower.
Flowers are attached to plants by theif if the main staik is branched. The fip of the peduncle is
typically swollen imto a small pad called a which is the structure the four foral whons are
attached to The oulermost whort is composed of and is collecively called the While uisoened.
this whod protects the fover from ikarmiful environmental condtions. The next whort is called
the Made up of it is often showy in order to attract pollinators like bees. Nested insibe these wo
whents are the niale poithon of the ffoure These structures are congosed of hio peats. an anther
(ne polen-bearing parm and a (the sender rigit staik in the sentences below with the appropriate
term or example. are derived from a number of flowers located on the same inflorescence, In the
case of a many flowers on a single, flestyy inflorescence are fused together. Thus, the developing
truitets merge together as they mature, forming one fruit. are derived from a single nower that
has two ocmore separate pistils. Strawberries are ctassifed as this fruit type since they have many
inchide blackbemies and on their outer surface Other examples chuses (eg. are dertwed from one
flower with a single simple or compound pistit: They can be fieshy tike por diy like.
Most lineages (species- genera- and broader clades) in North and Sout.pdf
Most lineages (species, genera, and broader clades) in North and South America have very
different evolutionary histories since North America (Nearctic region) was once part of the
supercontinent Laurasia. Laurasia was separated from Gondowana (the supercontinent that
contained South America (Neotropic region) for more than 100 million years.
Choose is the best explanation for this pattern.
a) Most species in North and South America have very similar evolutionary histories, but North
America has experienced a higher extinction rate due to habitat fragmentation and thus has fewer
species than South America.
b) North and South America were separated until 6 million years ago, limiting dispersal.
Different lineages evolved on each continent.
c) The long separation limited dispersal until 60 million years ago. Different lineages evolved on
each continent.
d) North and South America have different abiotic conditions (different biomes), so different
lineages have evolved on each continent.
2. Terrestrial (on land) biodiversity is higher in tropical (near the equator) than in temperate
(mid-latitude) regions. Which of the following best explains the reason for this pattern? ( Check
all statements that you think apply. )
a) Tropical regions are more pristine, with less human development and thus less species
extinction.
b) The annual average temperature in tropical regions is more variable than in the northern and
the southern hemispheres. Higher temperature variability is likely to generate a wider variety of
species.
c) Tropical regions have had a longer evolutionary history than the northern and the southern
hemispheres since the tropics worked as a refuge during several ice ages. A longer evolutionary
history means that species have been able to diversify over a longer time.
d) The tropics are more productive, leading to increased speciation and thus higher biodiversity.
e) Tropical regions have larger landmass than the northern and southern hemispheres. A larger
landmass allows for larger populations as well as geographical range of species, which both
decreases extinction rates.
.
Montserrat is studying creativity- She rates people's art on a scale o.pdf
Montserrat is studying creativity. She rates people's art on a scale of 1 7 . She then says that
anyone above 4 is a "high creative" and anyone below 4 is a "low creative." What type of
variable has she created? discontinous categorical continuous ratiocinated.
More from KOCHHARHOSY (20)
My selection of mini project is -Password manager- program that add- e.pdf
My selection of mini project is -Password manager- program that add- e.pdf
my taxa is bacteria-archea Research News Three (3) or more News Upda.pdf
my taxa is bacteria-archea Research News Three (3) or more News Upda.pdf
must use python Task 04 (Cycle Finding)- It was a very hectic day fo.pdf
must use python Task 04 (Cycle Finding)- It was a very hectic day fo.pdf
Multiple Cholce Question More abundant leisure increases but it real G.pdf
Multiple Cholce Question More abundant leisure increases but it real G.pdf
Multiple Answers- Patients suffering from Aplastic Anemia often show-.pdf
Multiple Answers- Patients suffering from Aplastic Anemia often show-.pdf
Multiple Answers- Unique features associated with T and B-cells lympho.pdf
Multiple Answers- Unique features associated with T and B-cells lympho.pdf
mu--- H- inainnon af awonte in nrder from oldest (1) to youngest (4)-.pdf
mu--- H- inainnon af awonte in nrder from oldest (1) to youngest (4)-.pdf
MS can eventually lead to axon degeneration because oligodendrocytes p (1).pdf
MS can eventually lead to axon degeneration because oligodendrocytes p (1).pdf
Ms- Carol Ramirez is a new resident in a long-term care facility based.pdf
Ms- Carol Ramirez is a new resident in a long-term care facility based.pdf
Mr-X an individual is curiously researching to find what type of inves.pdf
Mr-X an individual is curiously researching to find what type of inves.pdf
Ms- Petrie is a second-grade teacher- She realizes influenza season is (1).pdf
Ms- Petrie is a second-grade teacher- She realizes influenza season is (1).pdf
Mrs- Randazzo is an elderly woman admitted to the hospital from a nurs.pdf
Mrs- Randazzo is an elderly woman admitted to the hospital from a nurs.pdf
Moving to another question will save this response Question 16 Part Ma.pdf
Moving to another question will save this response Question 16 Part Ma.pdf
Most of the brightest stars in the sky are Select an answer and submit.pdf
Most of the brightest stars in the sky are Select an answer and submit.pdf
Mr- and Mrs- Faurah- an immierant couple in their early 70 '- have bee.pdf
Mr- and Mrs- Faurah- an immierant couple in their early 70 '- have bee.pdf
Mr and Mrs- Longfoot have been mamed for 52 years- They both have medi.pdf
Mr and Mrs- Longfoot have been mamed for 52 years- They both have medi.pdf
MPI Incorporated has $3 billion in assets- and its tax rate is 25-- It.pdf
MPI Incorporated has $3 billion in assets- and its tax rate is 25-- It.pdf
mplete the following paragraph to explain the location and function of.pdf
mplete the following paragraph to explain the location and function of.pdf
Most lineages (species- genera- and broader clades) in North and Sout.pdf
Most lineages (species- genera- and broader clades) in North and Sout.pdf
Montserrat is studying creativity- She rates people's art on a scale o.pdf
Montserrat is studying creativity- She rates people's art on a scale o.pdf
Recently uploaded
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...Nguyen Thanh Tu Collection
https://app.box.com/s/y977uz6bpd3af4qsebv7r9b7s21935vdYour Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective UpskillingExcellence Foundation for South Sudan
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...National Information Standards Organization (NISO)
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.Assessment and Planning in Educational technology.pptx
In an education system, it is understood that assessment is only for the students, but on the other hand, the Assessment of teachers is also an important aspect of the education system that ensures teachers are providing high-quality instruction to students. The assessment process can be used to provide feedback and support for professional development, to inform decisions about teacher retention or promotion, or to evaluate teacher effectiveness for accountability purposes.
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
Chapter 4 - Islamic Financial Institutions in Malaysia.pptxMohd Adib Abd Muin, Senior Lecturer at Universiti Utara Malaysia
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
clinical examination of hip joint (1).pdf
described clinical examination all orthopeadic conditions .
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
-------------------------------------------------------------------------------
Find out more about ISO training and certification services
Training: ISO/IEC 27001 Information Security Management System - EN | PECB
ISO/IEC 42001 Artificial Intelligence Management System - EN | PECB
General Data Protection Regulation (GDPR) - Training Courses - EN | PECB
Webinars: https://pecb.com/webinars
Article: https://pecb.com/article
-------------------------------------------------------------------------------
For more information about PECB:
Website: https://pecb.com/
LinkedIn: https://www.linkedin.com/company/pecb/
Facebook: https://www.facebook.com/PECBInternational/
Slideshare: http://www.slideshare.net/PECBCERTIFICATION
A Survey of Techniques for Maximizing LLM Performance.pptx
A Survey of Techniques for Maximizing LLM Performance
RPMS TEMPLATE FOR SCHOOL YEAR 2023-2024 FOR TEACHER 1 TO TEACHER 3
RPMS Template 2023-2024 by: Irene S. Rueco
The Diamonds of 2023-2024 in the IGRA collection
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
DRUGS AND ITS classification slide share
Any substance (other than food) that is used to prevent, diagnose, treat, or relieve symptoms of a
disease or abnormal condition
PCOS corelations and management through Ayurveda.
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
CACJapan - GROUP Presentation 1- Wk 4.pdf
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Azure Interview Questions and Answers PDF By ScholarHat
Azure Interview Questions and Answers PDF By ScholarHat
Recently uploaded (20)
Liberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdf
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Pride Month Slides 2024 David Douglas School District
Pride Month Slides 2024 David Douglas School District
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Assessment and Planning in Educational technology.pptx
Assessment and Planning in Educational technology.pptx
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
Film vocab for eal 3 students: Australia the movie
Film vocab for eal 3 students: Australia the movie
A Survey of Techniques for Maximizing LLM Performance.pptx
A Survey of Techniques for Maximizing LLM Performance.pptx
RPMS TEMPLATE FOR SCHOOL YEAR 2023-2024 FOR TEACHER 1 TO TEACHER 3
RPMS TEMPLATE FOR SCHOOL YEAR 2023-2024 FOR TEACHER 1 TO TEACHER 3
Azure Interview Questions and Answers PDF By ScholarHat
Azure Interview Questions and Answers PDF By ScholarHat
Muscle Contraction Mechanism Fit in the spaces below ta idenoby the st.pdf
- 1. Muscle Contraction Mechanism Fit in the spaces below ta idenoby the structures lateled by uner in the inages and complese a synopsis of the mechaniam of muscle contacion. The sigral to contract reaches the muscle fber at the (A) The nerve imputse reaches the end of the motor neuron, calted the (B) The (C) (membranous sacs) fuse with the PM of the motor neuron and release (D) the specific neurotransmitter for comminication wath muscies, which diffses across the space between the cells, called the (E). and binds to ( F ) in the PM of the muscle tiber, which intiates a(n) (not pictured) that travels dosn the length of the PM of the muscle fiber and Iravels down turnets from the PM called (G) This stimulates the ( H ) to release (not pictured uniti later) ions. Muscle Contraction Mechanism (continued) Each (J) (the corifactle unt of a muscle fiber) is separated from the next by proten bands. Their shape oves them the name Rows of altemative miscle fibers slide along each other to perlorm a contraction. Wrapping around the outside to form each rov are the thin (L). fibers. In the midde of each roware the thick (M0) fiber5. The ( M ) . fibers attach to the (L) fibers and pull ioward the certer durhg contraction to shorten the length of the (J) If we zoom in on the (L) and (M) protein fbers, to look at how they interact during contraction and relaxation, we see the wo regulatory proteins, called (N) and. (O) fo (L) when the (J) is relaced. When the muscle receives the signal to cortinct. (Q ions rush into the (J) and binds to ( 0 ciusing the (N) to move out of the way and allow the to bind io (L)