Myology
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This document defines and describes the three main types of muscles in the human body: skeletal, smooth, and cardiac muscles. It provides definitions of myology and muscles, and outlines the key functions of muscles which include movement, support, protection, heat generation, and blood circulation. The document then describes the characteristics and functions of each type of muscle - skeletal muscles are attached to bones and produce voluntary movement, smooth muscles are involuntary and line organs, and cardiac muscles make up the heart wall. It also classifies skeletal muscles based on shape, fiber architecture, and group action.
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Myology
This document provides an overview of myology, the study of muscle structure and function. It defines key terms like myocyte, muscle fiber, fascicle, and sarcolemma. Muscle tissue is made up of myocytes, contractile proteins like actin and myosin, and structural proteins. The structure of muscle fibers is also described, including that they are composed of myofibrils containing thick myofilaments of myosin and thin myofilaments of actin. Contractile and structural proteins important for muscle contraction and structure are identified.
Anatomy and physiology of a bone
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Know about Muscular tissue
Muscle is a contractile tissue found throughout the body that produces movement when stimulated. There are three main types of muscle tissue: smooth, cardiac, and skeletal muscle. Skeletal muscle is striated, voluntary muscle attached to bones that allows for conscious control of movement. It comprises over 600 muscles in the musculoskeletal system, including axial muscles that control facial expression and posture, and appendicular muscles of the limbs. Muscle fibers contract when stimulated by motor nerves, producing movement through their interaction with bones and tendons.
Myology ppt
Myology is the study of muscles. There are three main types of muscle tissue: skeletal, smooth, and cardiac. Skeletal muscle is striated and voluntary, controlling movement. Smooth muscle is non-striated and involuntary, found in organs. Cardiac muscle is striated, involuntary, and branched, found only in the heart. Muscles have an origin, insertion, and action depending on their location. They can be arranged in parallel, pennate, or sphincter formations. Muscles are surrounded by endomysium, perimysium, and epimysium fascia, connecting to bones via tendons.
Muscle
The document summarizes the muscular system. It describes the three main types of muscle tissue - skeletal, cardiac, and smooth muscle. It explains the characteristics, functions, and locations of each type. It also describes the microscopic structure of muscle from the whole muscle down to the protein filaments. The mechanics of muscle contraction are explained using the sliding filament model. Key terms like sarcomere, myosin, actin, and cross-bridges are defined in relation to how muscles contract.
Muscular system_powerpoint
The document summarizes the structure and function of the muscular system. It describes the three types of muscles, with a focus on skeletal muscles. Skeletal muscles produce movement by pulling on tendons attached to bones. The document then details the anatomy of skeletal muscles including their gross anatomy, blood supply, and microanatomy down to the level of the sarcomere. It explains how skeletal muscle contraction occurs through the sliding filament theory involving the interaction of actin and myosin filaments.
Muscular System
The muscular system is composed of about 700 named muscles that make up half of a person's body weight. Muscle tissue is found throughout the body and allows for functions like movement, posture, respiration, heat production, and heart contraction. There are three main types of muscle tissue: skeletal, smooth, and cardiac. Skeletal muscle is attached to bones and allows voluntary movement. Disorders that can affect muscles include cramps, fibromyalgia, muscular dystrophy, and tendinitis. The effects of aging include a loss of muscle mass and strength starting as early as age 25.
Skeletal Muscle Physiology Basics
Skeletal muscle is composed of long cylindrical muscle fibers that contain contractile filaments called myofibrils. Myofibrils contain regularly arranged thick and thin filaments that allow for muscle contraction via the sliding filament mechanism. Thick filaments are composed of myosin and thin filaments are composed of actin. When calcium levels rise, myosin heads bind to actin and the power stroke causes thin filaments to slide inward, shortening the sarcomere and muscle fiber. Calcium is released from the sarcoplasmic reticulum via T-tubules in response to neural stimulation.
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This document provides an overview of myology, the study of muscle structure and function. It defines key terms like myocyte, muscle fiber, fascicle, and sarcolemma. Muscle tissue is made up of myocytes, contractile proteins like actin and myosin, and structural proteins. The structure of muscle fibers is also described, including that they are composed of myofibrils containing thick myofilaments of myosin and thin myofilaments of actin. Contractile and structural proteins important for muscle contraction and structure are identified.
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Muscle is a contractile tissue found throughout the body that produces movement when stimulated. There are three main types of muscle tissue: smooth, cardiac, and skeletal muscle. Skeletal muscle is striated, voluntary muscle attached to bones that allows for conscious control of movement. It comprises over 600 muscles in the musculoskeletal system, including axial muscles that control facial expression and posture, and appendicular muscles of the limbs. Muscle fibers contract when stimulated by motor nerves, producing movement through their interaction with bones and tendons.
Myology ppt
Myology is the study of muscles. There are three main types of muscle tissue: skeletal, smooth, and cardiac. Skeletal muscle is striated and voluntary, controlling movement. Smooth muscle is non-striated and involuntary, found in organs. Cardiac muscle is striated, involuntary, and branched, found only in the heart. Muscles have an origin, insertion, and action depending on their location. They can be arranged in parallel, pennate, or sphincter formations. Muscles are surrounded by endomysium, perimysium, and epimysium fascia, connecting to bones via tendons.
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The document summarizes the muscular system. It describes the three main types of muscle tissue - skeletal, cardiac, and smooth muscle. It explains the characteristics, functions, and locations of each type. It also describes the microscopic structure of muscle from the whole muscle down to the protein filaments. The mechanics of muscle contraction are explained using the sliding filament model. Key terms like sarcomere, myosin, actin, and cross-bridges are defined in relation to how muscles contract.
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The document summarizes the structure and function of the muscular system. It describes the three types of muscles, with a focus on skeletal muscles. Skeletal muscles produce movement by pulling on tendons attached to bones. The document then details the anatomy of skeletal muscles including their gross anatomy, blood supply, and microanatomy down to the level of the sarcomere. It explains how skeletal muscle contraction occurs through the sliding filament theory involving the interaction of actin and myosin filaments.
Muscular System
The muscular system is composed of about 700 named muscles that make up half of a person's body weight. Muscle tissue is found throughout the body and allows for functions like movement, posture, respiration, heat production, and heart contraction. There are three main types of muscle tissue: skeletal, smooth, and cardiac. Skeletal muscle is attached to bones and allows voluntary movement. Disorders that can affect muscles include cramps, fibromyalgia, muscular dystrophy, and tendinitis. The effects of aging include a loss of muscle mass and strength starting as early as age 25.
Skeletal Muscle Physiology Basics
Skeletal muscle is composed of long cylindrical muscle fibers that contain contractile filaments called myofibrils. Myofibrils contain regularly arranged thick and thin filaments that allow for muscle contraction via the sliding filament mechanism. Thick filaments are composed of myosin and thin filaments are composed of actin. When calcium levels rise, myosin heads bind to actin and the power stroke causes thin filaments to slide inward, shortening the sarcomere and muscle fiber. Calcium is released from the sarcoplasmic reticulum via T-tubules in response to neural stimulation.
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- More than 50% of the human body is made up of three main types of muscle: skeletal, cardiac, and smooth.
- Skeletal muscle is voluntary, striated muscle attached to bones that facilitates movement. Cardiac muscle is involuntary, branched muscle found only in the heart. Smooth muscle is involuntary, non-striated muscle that lines internal organs.
- Each muscle type has a distinct structure that relates to its function. Skeletal muscle contains long, multi-nucleated fibers. Cardiac muscle contains short, branched fibers connected by intercalated discs. Smooth muscle contains spindle-shaped, single-nucleated cells.
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This document provides an overview of the muscular system and covers several key topics:
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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.
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This document summarizes the organization and structure of skeletal muscle. It describes that skeletal muscles are composed of bundles of long, cylindrical muscle cells called muscle fibers. Each muscle fiber contains thin filaments of actin and thick filaments of myosin that slide past each other during muscle contraction. Contraction occurs via a sliding filament mechanism where myosin heads hydrolyze ATP and attach to actin, generating a power stroke that shortens the muscle. Calcium release activates contraction by allowing the myosin heads to bind actin.
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2. The structure of muscle is explained from the microscopic level of actin and myosin filaments up to the whole muscle level of fascicles and tendons. Key components that allow contraction are also defined.
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website: http://am-medicine.com
Youtube Channel : https://www.youtube.com/user/ammedicine
Facebook group: https://www.facebook.com/groups/am.medicine
Muscles
1) There are three types of muscles: cardiac, smooth, and skeletal.
2) Skeletal muscles are voluntary muscles attached to bones that allow for movement.
3) Skeletal muscles can be classified in different ways, including by fiber arrangement, number of joints crossed, function, and orientation of pull.
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The document discusses the muscular system. It defines muscle and describes the various types of muscles in the body, including skeletal, smooth, cardiac and visceral muscles. It discusses the structure of muscles including origin, insertion, belly and tendons. It classifies muscles based on shape, location, action and function. Some key points covered are that there are approximately 639 skeletal muscles in the human body, their functions include movement, posture and heat production.
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Muscular System Overview
- More than 50% of the human body is made up of three main types of muscle: skeletal, cardiac, and smooth.
- Skeletal muscle is voluntary, striated muscle attached to bones that facilitates movement. Cardiac muscle is involuntary, branched muscle found only in the heart. Smooth muscle is involuntary, non-striated muscle that lines internal organs.
- Each muscle type has a distinct structure that relates to its function. Skeletal muscle contains long, multi-nucleated fibers. Cardiac muscle contains short, branched fibers connected by intercalated discs. Smooth muscle contains spindle-shaped, single-nucleated cells.
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.
General anatomy of muscle
General Anatomy of muscle discusses the nomenclature, attachments, nerve supply, and actions of muscles. Muscles are named according to their shape, number of heads, location, fiber direction, attachments, and nerve supply. Injuries to nerves can result in paralysis of innervated muscles and functional impairments. For example, injury to the median nerve can cause the "Pope's blessing" sign where the lateral fingers fail to flex when making a fist. The document provides examples of muscle names and the effects of nerve injuries on muscle function.
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The document discusses the three types of muscle tissues: cardiac, smooth, and skeletal muscle. It describes the characteristics of each type of muscle. Cardiac muscle is only found in the heart and is involuntary. Smooth muscle is found in organs and blood vessels and is also involuntary. Skeletal muscle is voluntary and attached to bones. The document also discusses muscle structure including myofibrils and myofilaments. It describes the roles of connective tissues like collagen, tendons, and ligaments. Motor units are defined as a motor neuron and the muscle fibers it connects to.
General myology copy
This document provides an overview of general myology (the study of muscles). It discusses the three main types of muscles - smooth, cardiac, and skeletal muscles. Skeletal muscles are voluntary muscles that are attached to bones and have bundles of fibers. The document describes the layers of connective tissue (epimysium, perimysium, endomysium) that surround skeletal muscle fibers. It also discusses the arrangements of skeletal muscle fibers, their attachments via tendons, and associated structures like tendon sheaths and bursae.
Human Skeletal system
The skeletal system includes all of the bones and joints in the body. Each bone is a complex living organ that is made up of many cells, protein fibers, and minerals. The skeleton acts as a scaffold by providing support and protection for the soft tissues that make up the rest of the body. The skeletal system also provides attachment points for muscles to allow movements at the joints. New blood cells are produced by the red bone marrow inside of our bones.
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General Anatomy of Joints with associated diagrams and radiographs. It involves some basic definitions as well.
Share it!
Lumbar plexus
The lumbar plexus is formed from the ventral rami of the L1-L4 spinal nerves and contribution from T12. It provides motor and sensory innervation to the anterior and medial thigh. The branches include the iliohypogastric, ilioinguinal, genitofemoral, femoral, lateral femoral cutaneous, and obturator nerves. The ilioinguinal nerve provides cutaneous sensation to the proximal medial thigh and genitals. The obturator nerve supplies the adductor muscles and medial thigh sensation. The femoral nerve is the largest branch, supplying the anterior thigh and quadriceps muscles.
Joints
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This is primarily a synthesis of the topic including the different types of Muscular System, their movement, functions, sample practical exercises, categories on how muscles got its names, examples of diseases and its causes and effects, and a fun trivia to motivate the class...
Enjoy! God bless you all :)
Superficial & deep fascia
The document summarizes the anatomy and characteristics of fascia. It describes the superficial fascia as a layer of loose connective tissue that connects the skin to underlying structures, with variable thickness, fat content, and presence of flat sheets of muscle in some regions. The quantity of subcutaneous fat differs between sexes and climates. The superficial fascia is most distinct on the lower abdominal wall, differentiating into two layers. It is also well differentiated in the limbs, perineum, and thin in other areas. Deep fascia forms a membrane wrapping the limbs and body wall with varying thickness and absence in some areas. It is firmly anchored to underlying bone and surrounds neurovascular structures in the neck.
skeletal muscle
This document summarizes the organization and structure of skeletal muscle. It describes that skeletal muscles are composed of bundles of long, cylindrical muscle cells called muscle fibers. Each muscle fiber contains thin filaments of actin and thick filaments of myosin that slide past each other during muscle contraction. Contraction occurs via a sliding filament mechanism where myosin heads hydrolyze ATP and attach to actin, generating a power stroke that shortens the muscle. Calcium release activates contraction by allowing the myosin heads to bind actin.
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This presentation accompanied a talk given by Melbourne based Orthopaedic Surgeon Mr Ash Moaveni, FRACS, on distal humeral fractures.
http://www.melbourneshoulder.com.au
Slides include information on
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- Sternoclavicular Joint Pathology
- Sternoclavicular Joint Instability - Classifications
- Sternoclavicular Joint Instability - Evaluation
- Sternoclavicular Joint Instability - Imaging
- Sternoclavicular Joint Instability - 4D CT
- Sternoclavicular Joint Instability - Acute
- Sternoclavicular Joint Instability - Outcome
- Sternoclavicular Joint Instability - Chronic
- Sternoclavicular Joint Pathology
- Sternoclavicular Joint Arthritis
- Is It Safe?
- Conclusion
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The document provides an overview of the muscular system, including:
1. It describes the three main types of muscle - skeletal, cardiac, and smooth muscle - and their functions. Skeletal muscle is voluntary and controls movement, cardiac muscle involuntarily pumps blood, and smooth muscle involuntarily controls organs.
2. The structure of muscle is explained from the microscopic level of actin and myosin filaments up to the whole muscle level of fascicles and tendons. Key components that allow contraction are also defined.
3. The sliding filament model of muscle contraction is described, involving calcium signaling, cross-bridge cycling of actin and myosin, and the generation of force. Relaxation occurs when
Structure of Muscle and its Type
This document summarizes the structure and types of muscle tissue in the human body. It discusses that muscle is composed of actin and myosin filaments that slide to produce movement. There are three main types of muscle: skeletal, cardiac, and smooth muscle. Skeletal muscle is striated and voluntary, attaching to bones via tendons. Cardiac muscle is also striated but involuntary, forming the walls of the heart. Smooth muscle is non-striated and involuntary, found within organs like the digestive tract.
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Skin and fascia
skin and fascia description for medical students from clinical anatomy by richard s. snell .you get everything you want follow me back and tell anything which is in your heart :) <3
slides by our kind hearted teacher MAM AMMARAH :)
Basic Human Anatomy.Ppt Powerpoint 1
The document provides a basic overview of human anatomy, listing the main bones like the skull and sternum, key organs like the brain and heart, and major organ systems such as the circulatory, nervous, digestive, respiratory, and excretory systems. It notes that the human body is made up of bones, organs, and organ systems working together.
Concentric and isometric
This document provides information on muscle anatomy and physiology. It lists various muscles and muscle groups in the back, arms, legs, and core. It then discusses the two main types of muscle fibers - slow twitch and fast twitch fibers - and how they differ in terms of speed of contraction, blood supply, fatigue resistance, and use for endurance versus power activities. The document also covers how muscles work by pulling on bones via tendons, the concept of agonist and antagonist muscle pairs, and the three types of muscle contraction: concentric, eccentric, and isometric.
Anatomy & Physiology Lecture Notes - Muscles & muscle tissue
website: http://am-medicine.com
Youtube Channel : https://www.youtube.com/user/ammedicine
Facebook group: https://www.facebook.com/groups/am.medicine
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Muscular system: M- mobility, U- unity, S- strength, C- coordination, L- loco...
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Strengthen your back exercises to build a better back and improve your posture
Strengthen your back exercises to build a better back and improve your posture
Anatomy & Physiology Lecture Notes - Muscles & muscle tissue
Anatomy & Physiology Lecture Notes - Muscles & muscle tissue
Similar to Myology
Muscles
1) There are three types of muscles: cardiac, smooth, and skeletal.
2) Skeletal muscles are voluntary muscles attached to bones that allow for movement.
3) Skeletal muscles can be classified in different ways, including by fiber arrangement, number of joints crossed, function, and orientation of pull.
2.pdf
The document discusses the muscular system. It defines muscle and describes the various types of muscles in the body, including skeletal, smooth, cardiac and visceral muscles. It discusses the structure of muscles including origin, insertion, belly and tendons. It classifies muscles based on shape, location, action and function. Some key points covered are that there are approximately 639 skeletal muscles in the human body, their functions include movement, posture and heat production.
Introduction to Anatomy (Muscular System)
This document discusses muscles and the muscular system. It begins by defining muscles and describing the various classifications of muscles. The key types are skeletal muscles, which are striated and voluntary. Skeletal muscles have origins, insertions, and bellies. They act to produce movement, maintain posture and support, and generate heat. The document outlines the structure of muscles and their components. It also categorizes muscles based on shape, function, and other characteristics.
Introduction to Muscle & Its Types
General Anatomy
• Introduction to muscle
• Histological Classification
• Functions of muscles in general
• Type of skeletal muscles
Mascular system
This document provides an overview of the musculoskeletal system. It begins by listing the objectives of describing the types and functions of muscles, skeletal muscle tissue, muscle arrangements, muscle structure and function, muscle naming conventions, microscopic muscle anatomy, muscle contraction types, muscle stimulation, muscle fiber anatomy, and the roles of actin, myosin, and ATP in muscle contraction. It then proceeds to define the three main types of muscles - cardiac, skeletal, and smooth muscles - and their characteristics. The document outlines the microscopic structure of skeletal muscle fibers and their organelles. It explains the sliding filament theory of muscle contraction and the roles of actin, myosin, and ATP hydrolysis in the cross-bridge cycling process. Various muscle arrangements
Muscular system of vertebrates
The document discusses the muscular system of aquatic vertebrates. It describes how lampreys have a more primitive muscular system compared to other vertebrates, with an eel-like body powered by axial musculature. Jawed fishes have a more advanced muscular system than lampreys but less complex than tetrapods. Their muscles include strap-like hypobranchial muscles that extend from the pectoral girdle to the visceral arches to open the jaws and pull down the gills.
Aaa stem muscular system power point
The muscular system is made up of over 600 muscles that are composed of connective tissue and muscle tissue. There are three main types of muscle - skeletal, cardiac, and smooth muscle. Skeletal muscle is attached to bones and helps with movement and organ protection. Cardiac muscle is only found in the heart and causes it to beat. Smooth muscle lines organs like the digestive tract and blood vessels to help move food and blood. Muscles work in pairs with flexors bending parts of the body and extensors straightening them. The basic unit of muscle is the sarcomere, and muscles are made of fibers, fascicles, and other connective tissues.
Topic 5 Muscular System
a compiled resources mainly to facilitate learning outcomes
Identify types of muscle tissues
Describe types of skeletal system
Identify human skeletal system
Identify the component of human musculo-skeletal system
Explain how muscle contracts
Describe muscle and bone relationships
The completemuscular system
The document summarizes the three types of muscles in the body - skeletal, cardiac, and smooth muscle. Skeletal muscle is voluntary and found in the limbs, cardiac muscle is involuntary and only located in the heart, and smooth muscle is involuntary and found in organs like the intestines. Each muscle type has distinct characteristics like fiber structure, nuclei number, and striation pattern. The document also discusses muscle contraction, types of responses, energy sources, and examples of major skeletal muscles and their functions.
General Anatomy of Muscles and action.pptx
anatomy of Muscles, type of muscles Bundle of fibrous tissue in animal/human body that has ability to contract and produce movement on joints and the body as a whole.
Composed of muscular tissue, have cells and intercellular substance.
Elongated cells of muscular tissue, referred to as muscle fibers.
Cells of muscular tissues are called myocytes.
Skeletal muscles; because of its attachment to skeleton
Smooth muscles; because of its microscopic structure
Cardiac muscles; because of its location in the body
Most abundant, 40% of total body weight
Under microscope, skeletal muscle fibers are seen as elongated, non-branching, multinucleated cells that show transversely arranged alternating dark and light band.
Also called; striated muscles, somatic muscle and voluntary muscles.
Smooth muscle fiber is a long, slender, spindle-shaped cell containing a single nucleus, which is located in the central wider part of cells
Forms sheet in the walls of the hollow organs
Also called; visceral muscles, non- striated muscles, involuntary muscles
Cardiac muscle fibers are made up of short, cylindrical segments(cells) joined end to end by intercellular junctions.
Show cross-striation due to alternating light and dark bands
Involuntary muscle supplied by autonomic nervous system
Fascia
Connective tissue component of Muscles
Endomysium
Perimysium
Epimysium
Tendon
aponeurosis
Muscle with fiber parallel to the line of pull
Muscle with fiber oblique to the line of pull
Spiral muscles
Cruciate muscles
Circular muscles
Flat muscles undergo a twist as they pass through there broad origin to narrow insertion
These muscles consist of two planes of fibers arranged in different directions, so that plane of fiber cross each other
These muscles consist of two planes of fibers arranged in different directions, so that plane of fiber cross each other
These muscles consist of two planes of fibers arranged in different directions, so that plane of fiber cross each other
These muscles consist of two planes of fibers arranged in different directions, so that plane of fiber cross each other
These muscles consist of two planes of fibers arranged in different directions, so that plane of fiber cross each other
These muscles consist of two planes of fibers arranged in different directions, so that plane of fiber cross each other
When an agonist crosses more than one joint, unwanted movement at the proximal joint is prevented by the contraction of synergist muscle.
Partial antagonist of prime mover
The group of muscles which stabilize the proximal joints of a limb, so that the desired movement at a distal joint may occur fixed base
(prime movers) are those which contract to produce specific movement
Are those muscle which oppose specific movement at joint. Antagonist muscles helps to make the desired movement smooth, steady and precise
Are those muscle which oppose specific movement at joint. Antagonist muscles helps to make the desired movement smooth, steady and precise
Muscles
Muscles,
Faculty of Medicine,
Alexandria University,
Medical Student: Mohammed Yasir Taha Alkhammas,
Under Supervision: Professor Dr. Nancy Mohamed El Sekily
General doctrine about the muscles.
This document provides an overview of the muscles and their classification. It discusses the three main types of muscles - skeletal, smooth, and cardiac muscles. For each type, it describes their characteristics, examples, and structural features. The functions of the muscular system are also summarized, including movement of body parts, stability and posture, heat production, circulation, and aiding digestion. Finally, the typical structure of a skeletal muscle is outlined, noting it has two ends - the origin which remains fixed during contraction, and the insertion which moves.
2. Unit - 7-Muscles Anatomy, Thiru Murugan, Msc Professor
The Muscular System
By Thiru murugan. M
The Muscular system:
Types and structure of muscles
Muscle groups: muscles of the head, neck, thorax, abdomen, pelvis, upper limb and lower limbs
Principal muscles: deltoid, biceps, triceps, respiratory, abdominal, pelvic floor, pelvic floor muscles, gluteal muscles and vastus lateralis
Major muscles involved in nursing procedures
Muscle:
Muscle is a soft tissue and it is one of the 4 basic tissues, along with nervous tissue, epithelium, and connective tissue.
Muscles helps in movement, support and protection of internal organs.
Muscles can perform variety of functions
Muscles tissue is made up of cells called “MYOCYTES” or muscle fibers.
There are more than 600 muscles in the human body. A kind of elastic tissue makes up each muscle, which consists of thousands, or tens of thousands, of small muscle fibers.
Types of Muscles: There are 3 main types of muscles
Skeletal muscle
Cardiac muscle
Smooth muscle
Skeletal muscle:
These are having close relationship to the bone or skeleton, so called Skeletal muscles
It present in limbs and related body parts & It form about 40% of body weight.
Under microscope the skeletal muscles fibers shows prominent striations, so called “Striated Muscles” & It is also known as “Voluntary Muscles” (movements are under our control)
Structure of Skeletal muscle:
Muscle fibers shows transverse striations under light microscope so it is called “striated muscles”
The nucleus is located peripherally.
Each skeletal muscle is an organ that consists of numerous cells called muscle fibers.
Each muscle fibers surrounded by “ Endomysium”
Inside each skeletal muscle, muscle fibers are organized into bundles, called fascicles, each fascicle surrounded by perimysium.
The whole muscle is covered by “epimysium”
Each skeletal muscle has three layers: endomysium, perimysium and epimysium
Muscle fibers:
Muscle is composed of many long cylindrical-shaped elongated fibres called muscle fibers
Length varies according to the size and shape of the muscles.
The actual arrangement of the fibres depending on the function of the muscle.
Each muscle fibers covered by a membrane is called the sarcolemma.
The cytoplasm of a muscle fiber is called Sarcoplasm
In sarcoplasm there are many mitochondria and bundles of fine longitudinal thread like part is called “myofibrils”
Microscopic structure of myofibrils:
A myofibril (also known as a muscle fibril or sarcostyle) is a basic rod-like part of a muscle cell.
Muscles are composed of tubular cells called myocytes, known as muscle fibres in striated muscle, and these cells in turn contain many chains of myofibrils.
They are created during embryonic development in a process known as myogenesis.
Under light microscope each myofibril consist of 2 bands:
Light band or “I” Band & Dark band or “A” Band
The alternating pattern of these bands results in the striated appearance of skeletal muscle.
Light band or “I” Band:
The I-bands (isotropic in polarize
Muscular
This document provides information about the muscular system. It discusses the three types of muscles - skeletal, smooth, and cardiac muscle - and their functions, structures, and locations in the body. Skeletal muscle is striated, voluntary muscle that enables movement. Smooth muscle is involuntary muscle found in organs like the digestive system. Cardiac muscle is only found in the heart. The document describes muscle contraction, naming conventions for muscles, and some common muscular disorders.
Muscle physiology (1)
This document discusses muscle anatomy and physiology as it relates to yoga. It covers the different types of muscles in the body, their structure and function, as well as muscle contraction types. Additional topics include muscle training principles, stretching techniques, and the roles of tendons and ligaments in connecting muscles to bones and providing joint stability. The document emphasizes how yoga can increase muscle strength, flexibility, and stability through regular practice.
Lec 1. introduction to muscle tissue
The document discusses muscle tissue and its classification. Muscle tissue is one of the four fundamental types and is made up of over 600 muscles. Muscles are classified in three ways: by the presence of striations into striated and non-striated muscle; by control into voluntary and involuntary muscle; and by location in the body into skeletal, cardiac, and smooth muscle. The key functions of muscle include producing movement, maintaining posture, stabilizing joints, and protecting internal organs.
Anatomy 2-images*
Muscle tissue is composed of three main types: skeletal, cardiac, and smooth muscle. Skeletal muscle is attached to bones via tendons and contracts to create movement at joints. Muscle contraction occurs when thin actin filaments slide over thick myosin filaments in a repetitive process. Proprioceptors like muscle spindles and Golgi tendon organs provide feedback to the brain about muscle length, tension, and joint position to enable coordinated movement. Reciprocal inhibition ensures opposing muscle groups contract and relax in synchrony during motion. Factors like genetics, prior activities, and yoga influence characteristic movement patterns.
muscular system report anaphy nn.pptx
The muscular system is a complex network of tissues and organs responsible for movement, stability, and heat generation in the human body. Comprising more than 600 individual muscles, it enables various functions, including locomotion, posture maintenance, breathing, and circulation assistance. Muscles are composed of muscle fibers, which are elongated cells capable of contracting and relaxing to generate force. Skeletal muscles, attached to bones via tendons, facilitate voluntary movements, such as walking and lifting objects, under conscious control. Smooth muscles, found in organs like the digestive tract and blood vessels, perform involuntary functions like peristalsis and regulating blood flow. Cardiac muscle, exclusively present in the heart, sustains its rhythmic contractions to pump blood throughout the body. The muscular system works in coordination with the skeletal, nervous, and circulatory systems to ensure efficient movement and overall bodily function. Regular exercise and proper nutrition are essential for maintaining muscular health and strength throughout life.
ex.phy. spsc.pptx
This document provides an introduction to exercise physiology. It defines exercise physiology as the study of physiological responses and adaptations to exercise. The importance of exercise physiology is discussed, including its role in areas like physiotherapy, understanding muscle structure and function, bioenergetics, and sports performance. The origins of exercise physiology as a discipline that evolved from its parent field of physiology are also noted. Key topics covered include the different types of muscle fibers, muscle contraction, the role of calcium, energy systems, and the sliding filament theory of muscle contraction.
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2. Unit - 7-Muscles Anatomy, Thiru Murugan, Msc Professor
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Myology
- 1. MYOLOGY Presented by: ZOO & whole Group -1 Presented to: Mam Ayesha Hameed
- 2. LEARNING OBJECTIVES • Definition of Myology • Definition of Muscles • Functions of Muscles • Types of Muscles, Their specific functions & Location
- 3. DEFINITION OF MYOLOGY Myology is the study of the muscular system, including the study of the structure, function and diseases of muscle.
- 4. DEFINITION OF MUSCLES A band or bundle of fibrous tissue in a human or animal body that has the ability to contract, producing movements or maintaining the position of parts of the body
- 5. FUNCTIONS OF MUSCLES • Movement Skeletal muscles pull on the bones by contracting and relaxing causing movements at the joints. • Support Muscles of the body wall support the internal organs & maintain external posture of body. • Protection Protection of vessels nerves and visceral organs from damage or external pressures • Heat generation Heat production by contraction of muscles • Blood circulation Skeletal muscles regulates and improves venous return by contraction.
- 6. TYPES OF MUSCLES 1. Skeletal Muscles 2. Smooth Muscles 3. Cardiac Muscles
- 7. SKELETAL MUSCLES Skeletal muscles are attached to bones by tendons, and they produce all the movements of body parts in relation to each other. Skeletal muscle is under voluntary control. Human body contains about 600 skeletal Muscles. Under microscope skeletal muscles fibers are seen as elongated, none branching, multinucleated cells having straited appearance. Skeletal muscles are controlled by somatic nervous system
- 8. CLASSIFICATION OF SKELETAL MUSCLES The skeletal muscles are classified into two groups on the basis of two criterias : • Shape and fibre architecture • Group action
- 9. CLASSIFICATION OF MUSCLES ON THE BASIS OF SHAPE AND ARCHITECTURE 1. Muscles with the fibers parallel to the line of pull a. Strap like muscles b. Quadrilateral muscles c. Fusiform muscles 2. Muscles with the fibers oblique to the line of pull a. Triangular muscles b. Pennate muscles (unipennate, bipennate, multipennate) c. Radial muscles 3. Spiral muscles 4. Cruciate muscles 5. Circular muscles Strap like muscle Quadrilateralmuscles Fusiform muscle
- 10. CLASSIFICATION OF MUSCLES ON THE BASE OF GROUP ACTION 1. AGONISTS 2. ANTAGONISTS 3. SYNERGISTS 4. FIXATORS
- 11. SMOOTH MUSCLES Smooth muscle are involuntary Non-striated muscle, so-called because it has no sarcomeres and therefore no striations. It is divided into two subgroups, single-unit and multiunit smooth muscle. Within single-unit muscle, the whole bundle or sheet of smooth muscle cells contracts as a syncytium. Under microscope smooth muscles fibers are long slender spindle shape cells containing single nucleus and no non straited appearance. Smooth muscles fibers form sheets in the walls of the visceral organs. Smooth muscles are controlled by autonomic nervous system.
- 12. CARDIAC MUSCLES Cardiac muscle (also called heart muscle or myocardium) is one of three types of muscle tissue. It is involuntary, striated muscle that constitutes the main tissue of the wall of the heart. Under microscope cardiac muscles fibers are short cylindrical segments joined end to end by inter cellular junctions and have branched striated appearance. They are under control of autonomic nervous system. This Photo by Unknown Author is licensed under CC BY-SA