The document discusses the nervous system, including:
- It is divided into the central nervous system (CNS) comprising the brain and spinal cord, and the peripheral nervous system (PNS) connecting to the CNS.
- The CNS contains over 1 trillion neurons and quadrillions of connections, and is responsible for functions like perception, movement, and cognition.
- The brain is the control center and is divided into the cerebrum, cerebellum, and brain stem, each with distinct functions like learning, coordination, and regulating vital functions.
- The spinal cord transmits signals between the brain and body and coordinates reflexes through ascending and descending tracts.
The central nervous system (CNS) is made up of the brain and spinal cord. The brain controls most body functions, including awareness, movements, sensations, thoughts, speech and memory. The spinal cord is connected to the brain at the brain stem and is covered by the vertebrae of the spine.
The central nervous system (CNS) is made up of the brain and spinal cord. The brain controls most body functions, including awareness, movements, sensations, thoughts, speech and memory. The spinal cord is connected to the brain at the brain stem and is covered by the vertebrae of the spine.
“The right half of the brain controls the left half of the body. This means that only left handed people are in their right mind.”
Made up of brain and spinal cordActs as body’s control center, coordinates body’s activitiesImpulses travel through the neurons in your body to reach the brainCentral Nervous System is yellow in this diagram.
Made up of all the nerves that carry messages to and from the central nervous system.Similar to telephone wires that connect all of our houses in the communityCentral Nervous System and Peripheral Nervous System work together to make rapid changes in your body in response to stimuli.Peripheral Nervous System is green in this diagram.
Somatic Nervous SystemRelay information between skin, skeletal muscles and central nervous systemYou consciously control this pathway by deciding whether or not to move muscles (except reflexes)Reflexes: Automatic response to stimulusAutonomic Nervous SystemRelay information from central nervous system to organsInvoluntary: You do not consciously control theseSympathetic Nervous System: controls in times of stress, such as the flight or fight responseParasympathetic Nervous System: controls body in times of rest
special sense organs (anatomy and physiology) - a brief discussion Pallab Nath
brief discussion on special senses, Basic level class for technicians. topics discussed include eyes and vision, nose and sense of smell, tongue and sense of taste and ears and hearing
Peripheral Nervous System, Audumbar MaliAudumbar Mali
Peripheral Nervous System,
Types of PNS,
Spinal nerves,
Types of neuron (3 basic types),
Plexus,
Cranial nerves,
Autonomic nervous system,
Structure of Neuron,
Human Anatomy and Physiology-I,
Syllabus As per PCI,
B. Pharm-I
The detail description about peripheral nervous system, neuron, its covering, types of neuron, synapses, spinal nerves, plexus, and more about cranial nerves at last not the least about somatic and autonomic nervous system. you may also find the information about types of peripheral nervous system in detail.
The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column. It encloses the central canal of the spinal cord, which contains cerebrospinal fluid. The brain and spinal cord together make up the central nervous system (CNS). In humans, the spinal cord begins at the occipital bone, passing through the foramen magnum and entering the spinal canal at the beginning of the cervical vertebrae.
“The right half of the brain controls the left half of the body. This means that only left handed people are in their right mind.”
Made up of brain and spinal cordActs as body’s control center, coordinates body’s activitiesImpulses travel through the neurons in your body to reach the brainCentral Nervous System is yellow in this diagram.
Made up of all the nerves that carry messages to and from the central nervous system.Similar to telephone wires that connect all of our houses in the communityCentral Nervous System and Peripheral Nervous System work together to make rapid changes in your body in response to stimuli.Peripheral Nervous System is green in this diagram.
Somatic Nervous SystemRelay information between skin, skeletal muscles and central nervous systemYou consciously control this pathway by deciding whether or not to move muscles (except reflexes)Reflexes: Automatic response to stimulusAutonomic Nervous SystemRelay information from central nervous system to organsInvoluntary: You do not consciously control theseSympathetic Nervous System: controls in times of stress, such as the flight or fight responseParasympathetic Nervous System: controls body in times of rest
special sense organs (anatomy and physiology) - a brief discussion Pallab Nath
brief discussion on special senses, Basic level class for technicians. topics discussed include eyes and vision, nose and sense of smell, tongue and sense of taste and ears and hearing
Peripheral Nervous System, Audumbar MaliAudumbar Mali
Peripheral Nervous System,
Types of PNS,
Spinal nerves,
Types of neuron (3 basic types),
Plexus,
Cranial nerves,
Autonomic nervous system,
Structure of Neuron,
Human Anatomy and Physiology-I,
Syllabus As per PCI,
B. Pharm-I
The detail description about peripheral nervous system, neuron, its covering, types of neuron, synapses, spinal nerves, plexus, and more about cranial nerves at last not the least about somatic and autonomic nervous system. you may also find the information about types of peripheral nervous system in detail.
The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column. It encloses the central canal of the spinal cord, which contains cerebrospinal fluid. The brain and spinal cord together make up the central nervous system (CNS). In humans, the spinal cord begins at the occipital bone, passing through the foramen magnum and entering the spinal canal at the beginning of the cervical vertebrae.
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
Couples presenting to the infertility clinic- Do they really have infertility...Sujoy Dasgupta
Dr Sujoy Dasgupta presented the study on "Couples presenting to the infertility clinic- Do they really have infertility? – The unexplored stories of non-consummation" in the 13th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2024) at Manila on 24 May, 2024.
Knee anatomy and clinical tests 2024.pdfvimalpl1234
This includes all relevant anatomy and clinical tests compiled from standard textbooks, Campbell,netter etc..It is comprehensive and best suited for orthopaedicians and orthopaedic residents.
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
New Drug Discovery and Development .....NEHA GUPTA
The "New Drug Discovery and Development" process involves the identification, design, testing, and manufacturing of novel pharmaceutical compounds with the aim of introducing new and improved treatments for various medical conditions. This comprehensive endeavor encompasses various stages, including target identification, preclinical studies, clinical trials, regulatory approval, and post-market surveillance. It involves multidisciplinary collaboration among scientists, researchers, clinicians, regulatory experts, and pharmaceutical companies to bring innovative therapies to market and address unmet medical needs.
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
2. NERVOUS SYSTEM
The nervous system is the part of an animal's
body that coordinates its voluntary and
involuntary actions and transmits signals
between different parts of its body. Nervous
tissue first arose in wormlike organisms about
550 to 600 million years ago. In most animal
species it consists of two main parts, the
Central Nervous System (CNS) and the
Peripheral Nervous System (PNS). The CNS
contains the brain and spinal cord. The PNS
consists mainly of nerves, which are enclosed
bundles of the long fibers or axons, that
connect the CNS to every other part of the
body.
3. Your Nervous System
Credit Medical Art Service, Munich /, Wellcome Images
Is divided into the central
nervous system (CNS)
Which is the brain and
spinal cord
And the
peripheral nervous system
(PNS)
Which connects everything
to the brain and spinal cord
4. Central Nervous System
– CNS: brain and spinal cord
– Necessary for the maintenance of homeostasis
– Contains 1011 neurons
– Contains 1014 synapses
– Responsible for everything we perceive, do, feel,
and think
6. The Brain
• The brain is the control
center of the body
• It is about 2% of your
body weight and uses
20% of your body’s
oxygen
7. Parts of the Brain
Divided into
three parts
Cerebrum Cerebellum Brain Stem
8.
9. Cerebrum
1. Largest part of the brain
– Learning and Senses
– 2 hemispheres- Right and Left
– Connected by the Corpus Callosum
– Right side controls- left side
– Left side controls – right side of body
– Four sections - LOBES
1. Frontal Lobe 2. Parietal Lobe
3. Occipital Lobe 4.Temporal Lobe
10. Premotor cortex
(coordinates
voluntary
movements)
Primary somatosensory
cortex (somesthetic sensations
and proprioception)
Sensory association
areas (integration of
sensory information)
Primary motor cortex
(voluntary movement)
Central sulcus
Prefrontal
association
areas (idea and
plan for voluntary
movement, thoughts,
personality)
Broca’s area
(speech formation)
Olfactory cortex
(smell)
Limbic association
cortex (emotions,
learning, and memory)
Visual association
areas (higher vision
processing)
Wernicke’s area
(language
comprehension)
Auditory
association
areas
Primary auditory
cortex (hearing)
Primary visual cortex
(vision)
Figure 9.14
Functional Areas of Cerebrum
11. Cerebellum
– Second largest
– located below the
cerebrum at back of
skull
– This part is responsible
for the balance and
muscle coordination
12. Other Structures inside the Brain
• Thalamus – receives messages from sensory
receptors; relays information to proper
regions of cerebrum
• Hypothalamus - Regulates hunger, thirst,
fatigue, anger, etc…
– Control of pituitary for endocrine function
13. Spinal Cord
• Link between brain and rest of body (PNS)
• 31 pairs of spinal nerves
• Reflexes processed directly by spinal cord
• Reflex – quick, automatic, unconscious
responses
• Result of reflex arcs – shortest nerve pathways
14.
15. Spinal Cord and Spinal Nerves
• Dorsal: sensory functions
• Ventral: motor functions
Gray matter:
functional halves
Spinal nerves are
mixed
• Ascending
• Descending
White matter
forms tracts
21. Different regions have different
Functions Cerebral cortex
Functions include:
planning; reasoning;
language; recognising
sounds and images;
memory. Corpus
callosum
connects the brain’s
right and left
hemispheres
Cerebellum
important for
coordination,
precision and timing
of movement
Brain stem
regulates heart
rate, breathing,
sleep cycles
and emotions
22. The cells of the nervous system are called Neurones
cell body
dendrites nerve endings
myelin sheath
axon
nucleus
structure of a neurone
23. There are different types of neurons
motor neurone sensory neurone relay neurone
direction of
electrical
signal
sends signals to your muscles
to tell them to move
sends signals from
your sense organs
connects neurones to
other neurones
dendrites
cell body
axon
myelin
sheath
nerve
endings
24. neurones communicate with each other using a
mixture of electrical & chemical signals
cell body
dendrites nerve endings
myelin sheath
nucleus an electrical
axon
signal is
transmitted
along the axon
But what happens when the signal
reaches the end of the axon?
25. cell body
Signals cross between neurones at the Synapse
synapse
dendrites nerve endings
myelin sheath
vesicle
nucleus the signal
axon
neurotransmitter
is transmitted to
another neurone across a
junction called a synapse by
chemicals called
neurotransmitters.
synaptic cleft
receptor
26. Signals cross between neurones at the Synapse
vesicle
the signal
dendrites nerve endings
is transmitted to
myelin sheath
another neurone across a
junction called a synapse by
chemicals called
neurotransmitters.
electrical impulse triggers vesicles
to move to the synapse membrane
cell body
axon
nucleus
synapse
neurotransmitter
synaptic cleft
receptor
1
vesicles fuse with the membrane and
release neurotransmitter into the
synaptic cleft
2
neurotransmitter diffuses across
the cleft and binds to receptors
on the other side
3
Once enough receptors have
neurotransmitters bound to
them, the signal is
transmitted…
4
27. The point where your muscles and nervous system meet is called the
neuromuscular junction (NMJ)
Signals sent from your central nervous
system to the NMJ tell muscles to move
The synapses at the NMJ
use a neurotransmitter
called acetylcholine