ELEC 811 Skeletal Muscle Anatomy and Function. Skeletal muscles act on bones to produce movement of the limb and to move (lift and carry) objects.
|
|
- Tracy Lawson
- 7 years ago
- Views:
Transcription
1 ELEC 811 Skeletal Muscle Anatomy and Function The primary function of a skeletal muscle is to generate forces, by contracting; these forces allow us to move through and interact with our environment Skeletal muscles act on bones to produce movement of the limb and to move (lift and carry) objects. Image from: anphys/skel_mus.htm
2 Skeletal muscle anatomy A muscle is a bundle of individual muscle cells or fibres Each fibre is surrounded by connective tissue, called the endomysium
3 Skeletal muscle anatomy The fibres are organized in bundles called fascicles* Each fascicle is surrounded by connective tissue, called the perimysium * These are also called compartments.
4 Skeletal muscle anatomy A number of fascicles or compartments are bundled to form a skeletal muscle The muscle is surrounded by a connective tissue sheath called the epimysium
5 Skeletal muscle anatomy At the ends of the muscle, the endomysium, perimysium and epimysium merge to form the tendon, which connects the muscle to bone
6 Skeletal muscle anatomy gross anatomy There are 5 different shapes of muscles in the human body: circular, convergent, parallel, pennate and fusiform. We are primarily interested in pennate and fusiform muscles. In pennate muscles, the muscle fibres are at an angle to the tendons In fusiform muscles, the muscle fibres are in line with the tendons tendon tendon Unipennate and bipennate arrangement Fusiform arrangement
7 Agonist and antagonist muscles Muscles generate force by contracting to pull the tendon of insertion (usually further away from the centre of the body) closer to the tendon or origin (usually closer to the centre of the body. In order to move a limb in opposing directions, muscles are often organized in pairs called agonist antagonist pairs. The biceps brachii contracts to move the forearm closer to the upper arm or flex the elbow. The triceps brachii contracts to move the forearm away from the upper arm or extend the elbow.
8 Motor control the brain Motor programming is done in the pre motor cortex, supplementary motor area and other associated areas. The primary motor cortex receives information from the motor programming areas, the cerebellum and basal ganglia.
9 Areas of the brain The motor cortex is at the rear portion of the frontal lobe. area 6 the pre motor cortex area 4 the primary motor cortex The cerebellum is the structure tucked under the back part of the brain. The cerebellum precisely regulates the sequence and duration of movement. The basal ganglia are located deep in the cerebrum. They function to initiate and regulate motor commands. See: The Brain from Top to Bottom: Body Movement and the Brain
10 Motor control the motor nerves Motor commands are relayed from the motor cortex, along the corticospinal tract to the muscles. The corticospinal tract is comprised of motoneurons, which are the nerves which make contact with the muscle cells.
11 The motor unit (MU) Each motoneuron connects with several muscle fibres a motoneuron and all muscle fibres innervated by the motoneuron are called a motor unit. motoneuron with terminal branches n muscle fibres
12 Motoneuron and muscle cell characteristics Motoneurons vary in their morphology (size and shape) and electrophysiological characteristics (action potential conduction velocity). Muscle cells vary in their morphology and contractile characteristics contraction time and sensitivity to fatigue. The muscle cells within a motor unit will have uniform contractile characteristics. Muscle fatigue is a physiological process resulting in the decline of muscle output force or power over the time course of a sustained muscle contraction.
13 Motor unit types Three types of muscle fibre have been identified type I, IIa and IIb. Each motor unit will include only one type of muscle fibre. Motor Unit Type Mechanical Properties Electrical Properties Other Slow twitch or Type I Slow, small force twitch; smaller fibre diamter and MU size Slower nerve conduction velocity Recruited at low force levels Fast, fatigueresistant or Type IIa Fast force twitch Intermediate nerve conduction velocity Recruited at intermediate force levels Fast, fatiguing or Type IIb Fast, large force twitch; large fibre diameter and MU size Faster nerve conduction velocity Recruited at high force levels From: Merletti and Parker, Electromyography,
14 Motor unit contraction u(t) Activation :excitationcontraction coupling a(t) Muscle contraction dynamics F m (t) A neural excitation signal, u(t), is received from the motoneuron. A muscle activation state, a(t), is generated via the excitationcontraction coupling mechanism this activates the muscle contractile process. The contractile mechanism in the muscle cells turns on and force is generated via muscle contraction dyanmics. All muscle cells in the motor unit contract to develop an output force F m (t). Adapted from Zajac, 1989.
15 The force twitch Potential (mv) Fast twitch motor unit Slow twitch motor unit t(ms) Potential (mv) t(ms) motoneuron potentials Force (mn) Force (mn) Motor unit force twitches t(ms) t(ms) EMD EMD An action potential in an motoneuron results in contraction of all muscle fibres in the motor unit and generation of a force twitch. EMD = electromechanical delay. Adapted from: Merletti and Parker, 2004
16 Smooth force production When a motor unit is excited by its motoneuron, it will produce a short duration force twitch In order to get longer, smooth force generation, the motor unit must be continuously excited. Excitation pulses Force t(ms) t(ms)
17 References R. Merletti and P.A. Parker, Electromyography, IEEE Press, Piscataway, NJ, F. Zajac, Muscle and tendon: properties, models, scaling and application to biomechanics and motor control, CRC Crit. Rev. Biomed. Eng., 17(4): , The Brain from Top to Bottom: Body Movement and the Brain, Skeletal muscles, kel_mus.htm
Chapter 6. Components of Elasticity. Musculotendinous Unit. Behavioral Properties of the Musculotendinous Unit. Biomechanics of Skeletal Muscle
Chapter 6 Behavioral Properties of the Musculotendinous Unit 1) extensibility: ability to be stretched or to increase in length 2) elasticity: ability to return to normal resting length following a stretch
More informationMuscle Fibres. Anatomy and Physiology Advanced Diploma Course Sample Pages Page 1
Muscle Fibres Muscles are composed of thousands of individual muscle fibres, which are held together by connective tissue. However, muscle fibres may differ in physiological makeup. Anatomy and Physiology
More informationChapter 6: The Muscular System
Chapter 6: The Muscular System I. Overview of Muscle Tissues Objectives: Describe the similarities and differences in the structure and function of the three types of muscle tissue, and indicate where
More informationMuscle Movements, Types, and Names
Muscle Movements, Types, and Names A. Gross Skeletal Muscle Activity 1. With a few exceptions, all muscles cross at least one joint 2. Typically, the bulk of the muscle lies proximal to the joint it crossed
More informationAnatomy & Physiology 120. Lab #7 Muscle Tissue and Skeletal Muscles
Anatomy & Physiology 120 Lab #7 Muscle Tissue and Skeletal Muscles What you Need to Know Look briefly at the Structure of: 1) Skeletal, 2) Smooth & 3) Cardiac Muscle Naming, Identification, Functions You
More informationModule F SKELETAL SYSTEM & ARTICULATIONS
Module F SKELETAL SYSTEM & ARTICULATIONS Topic from General functions of bone & the skeletal system Structural components microscopic anatomy Structural components gross anatomy Physiology of embryonic
More informationMuscle Organization and Function. Chapter 10: The Muscular System. Parallel (Fusiform) Muscles. Organization of Skeletal Muscle Fibers
Muscle Organization and Function Chapter 10: The Muscular System Muscle organization affects power, range, and speed of muscle movement Muscle cells (fibers) are organized in bundles (fascicles) Fibers
More informationBiomechanics of Skeletal Muscle
Oatis_CH04_045-068.qxd 4/18/07 2:21 PM Page 45 CHAPTER 4 Biomechanics of Skeletal Muscle CHAPTER CONTENTS STRUCTURE OF SKELETAL MUSCLE.......................................................................46
More informationChapter 13. The Nature of Somatic Reflexes
Chapter 13 The Nature of Somatic Reflexes Nature of Reflexes (1 of 3) A reflex is an involuntary responses initiated by a sensory input resulting in a change in a gland or muscle tissue occur without our
More informationwww.ghadialisurgery.com
P R E S E N T S Dr. Mufa T. Ghadiali is skilled in all aspects of General Surgery. His General Surgery Services include: General Surgery Advanced Laparoscopic Surgery Surgical Oncology Gastrointestinal
More informationSkeletal Muscle Mechanics
Skeletal Muscle Mechanics Brief reminder Types of muscle contraction Force of weight = force developed by muscle Muscle length does not change Force of weight < force developed by muscle Muscle allowed
More informationMUSCULAR SYSTEM REVIEW. 1. Identify the general functions of the muscular system
MUSCULAR SYSTEM REVIEW 1. Identify the general functions of the muscular system 2. Define the four characteristics of muscular tissue a. irritability (excitability) - b. extensibility- c. contractibility
More informationName. Most of the bones of the limbs (arms & legs) act as levers. These levers are powered by muscles.
Bones as Levers 1 Name Bones as Levers You may not think of your limbs as being machines, but they are. The action of a muscle pulling on a bone often works like a type of simple machine called a lever.
More informationNervous System: Spinal Cord and Spinal Nerves (Chapter 13) Lecture Materials for Amy Warenda Czura, Ph.D. Suffolk County Community College
Nervous System: Spinal Cord and Spinal Nerves (Chapter 13) Lecture Materials for Amy Warenda Czura, Ph.D. Suffolk County Community College Primary Sources for figures and content: Eastern Campus Marieb,
More informationReflex Physiology. Dr. Ali Ebneshahidi. 2009 Ebneshahidi
Reflex Physiology Dr. Ali Ebneshahidi Reflex Physiology Reflexes are automatic, subconscious response to changes within or outside the body. a. Reflexes maintain homeostasis (autonomic reflexes) heart
More informationChapter 7: The Nervous System
Chapter 7: The Nervous System Objectives Discuss the general organization of the nervous system Describe the structure & function of a nerve Draw and label the pathways involved in a withdraw reflex Define
More informationMuscle Tissue. Muscle Physiology. Skeletal Muscle. Types of Muscle. Skeletal Muscle Organization. Myofibril Structure
Muscle Tissue Muscle Physiology Chapter 12 Specially designed to contract Generates mechanical force Functions locomotion and external movements internal movement (circulation, digestion) heat generation
More informationBiology 2401 Anatomy and Physiology I Exam 3 Notes- Muscular System Ch. 8
Biology 2401 Anatomy and Physiology I Exam 3 Notes- Muscular System Ch. 8 Functions of the muscular system: movement of body or body parts and materials within the body maintain posture and body position
More informationBASIC PROPERTIES OF MUSCLE
BASIC PROPERTIES OF MUSCLE 18-1 Lecture Overview Muscles and motion Muscles Muscle structure Relevant properties Force-length properties Muscle states Force-velocity relationship Muscle fiber types Isometric
More informationStructure and Function of the Musculoskeletal System Professor Alan Hedge DEA 3250/6510
Structure and Function of the Musculoskeletal System Professor Alan Hedge DEA 3250/6510 Functions of the Musculoskeletal System Support and protect the body and its organs. Provide motion. Musculoskeletal
More informationMUSCLES G.C.S.E. PHYSICAL EDUCATION. Unit 1. Factors Affecting Participation and Performance. G.C.S.E. P.E. Teacher:.
G.C.S.E. PHYSICAL EDUCATION Unit 1 Factors Affecting Participation and Performance MUSCLES Name: G.C.S.E. P.E. Teacher:. By the end of this booklet you should: Be able to describe and explain how muscles
More informationChapter 10 Muscle Tissue Lecture Outline
Chapter 10 Muscle Tissue Lecture Outline Muscle tissue types 1. Skeletal muscle = voluntary striated 2. Cardiac muscle = involuntary striated 3. Smooth muscle = involuntary nonstriated Characteristics
More informationCOMPUTER-RELATED MUSCLE, TENDON, AND JOINT INJURIES
CHAPTER ELEVEN COMPUTER-RELATED MUSCLE, TENDON, AND JOINT INJURIES To reduce the risk of pain in your neck and shoulders, stay within these recommended ranges of movement: Neck Flexion: 0 o -15 o (bending
More informationMUSCULAR SYSTEM. A. K. Sengupta 9/9/2010 1/12
MUSCULAR SYSTEM Introduction Functions and basic types of muscle cells Skeletal muscle cells and connective tissues The nervous system Mechanism of muscle contraction Motor unit Action potential basis
More informationThe Detection of Neural Fatigue during intensive conditioning for football: The Potential of Transcranial Magnetic Stimulation
The Detection of Neural Fatigue during intensive conditioning for football: The Potential of Transcranial Magnetic Stimulation Carl Wells PhD Sport Science Lead, Perform, National Football Centre, St.
More informationCHAPTER XV PDL 101 HUMAN ANATOMY & PHYSIOLOGY. Ms. K. GOWRI. M.Pharm., Lecturer.
CHAPTER XV PDL 101 HUMAN ANATOMY & PHYSIOLOGY Ms. K. GOWRI. M.Pharm., Lecturer. Types of Muscle Tissue Classified by location, appearance, and by the type of nervous system control or innervation. Skeletal
More informationHuman Body Vocabulary Words Week 1
Vocabulary Words Week 1 1. arteries Any of the blood vessels that carry blood away from the heart to all parts of the body 2. heart The muscular organ inside the chest that pumps blood through the body
More informationName Date Hour. Nerve Histology Microscope Lab
Name Date Hour Nerve Histology Microscope Lab PRE-LAB: Answer the following questions using your reading and class notes before starting the microscope lab. 1. What is the difference between the functions
More informationMuscle is the only human tissue capable of shortening, or
Chapter The Muscular System 5 Muscle is the only human tissue capable of shortening, or contracting. This unique ability is what makes body movements possible. Without muscle the powerful movements required
More informationSPINAL CORD CIRCUITS AND MOTOR CONTROL
OVERVEW The proximate control of movement is provided by neurons in the spinal cord and brainstem. The primary motor neurons located in the ventral horn of the spinal cord gray matter (and the corresponding
More informationBIO 2401 MUSCLE TISSUE page 1 MUSCLES AND MUSCLE TISSUE. Striations Present or Absent?
BIO 2401 MUSCLE TISSUE page 1 Types of Muscle MUSCLES AND MUSCLE TISSUE Type of Muscle Skeletal Location of Muscle attaches to and covers bony skeleton Striations Present or Absent? present Control of
More informationThe Muscular System General & Anatomy
The Muscular System General & Anatomy General Functions: 1. movement voluntary skeletal muscles 2. internal movement of substances through various tubes and passageways eg blood, food, urine heart pumps
More informationPeripheral Nervous System
Nervous system consists of: Peripheral Nervous System CNS = brain and spinal cord ~90% (90 Bil) of all neurons in body are in CNS PNS = Cranial nerves and spinal nerves, nerve plexuses & ganglia ~10% (10
More informationNeuromuscular Adaptations to Training
Neuromuscular Adaptations to Training Baechle Chapter 4, pp. 143-151, 151, Powers & Howley pp. 253-255 255 Lecture Overview Neural Adaptations Skeletal Muscle Adaptations Connective Tissue Anatomy Connective
More informationCSE511 Brain & Memory Modeling. Lect04: Brain & Spine Neuroanatomy
CSE511 Brain & Memory Modeling CSE511 Brain & Memory Modeling Lect02: BOSS Discrete Event Simulator Lect04: Brain & Spine Neuroanatomy Appendix of Purves et al., 4e Larry Wittie Computer Science, StonyBrook
More informationStrength Training for the Runner
Strength Training for the Runner Strength Training for the Runner What? The goal of resistance training for runners is not necessarily adding muscle mass but 1. improving muscular strength, 2. improving
More informationMuscle Tissue Muscle tissues are specialized to contract. Muscle cells are connected together, primarily by collagen fibers
Muscle Tissue Muscle tissues are specialized to contract. Muscle cells are connected together, primarily by collagen fibers When a muscle cell contracts t it pulls on the collagen fibers creating tension
More informationRepublic Polytechnic. Continuing Education & Training. Course Structure: Anatomy & Physiology
Republic Polytechnic Continuing Education & Training Course Structure: Anatomy & Physiology Module Anatomy and Physiology Description This module introduces the basic human anatomical organization, tissue
More informationAnatomy PHL 212. By Dr Tajdar Husain Khan
Anatomy PHL 212 By Dr Tajdar Husain Khan Overview of Anatomy Anatomy(from the Greek word anatome,"dissection") is a branch of natural science dealing with the structural organization of living things The
More informationFunction (& other notes)
LAB 8. ANATOMY OF THE HUMAN BRAIN In this exercise you each will map the human brain both anatomy and function so that you can develop a more accurate picture of what s going on in your head :-) EXTERNAL
More informationLevel 2 Certificate in Fitness Instructing Unit 1: Anatomy and Physiology
Level 2 Certificate in Fitness Instructing Unit 1: Anatomy and Physiology These questions have been compiled based on the information available for the above qualification and unit. This mock should be
More informationOrigin of Electrical Membrane Potential
Origin of Electrical Membrane Potential parti This book is about the physiological characteristics of nerve and muscle cells. As we shall see, the ability of these cells to generate and conduct electricity
More informationAnimal Systems: The Musculoskeletal System
Animal Systems: The Musculoskeletal System Tissues, Organs, and Systems of Living Things Cells, Cell Division, and Animal Systems and Plant Systems Cell Specialization Human Systems The Digestive The Circulatory
More informationNorth Bergen School District Benchmarks
Grade: 10,11, and 12 Subject: Anatomy and Physiology First Marking Period Define anatomy and physiology, and describe various subspecialties of each discipline. Describe the five basic functions of living
More informationGAZE STABILIZATION SYSTEMS Vestibular Ocular Reflex (VOR) Purpose of VOR Chief function is to stabilize gaze during locomotion. Acuity declines if
GAZE STABILIZATION SYSTEMS Vestibular Ocular Reflex (VOR) Purpose of VOR Chief function is to stabilize gaze during locomotion. Acuity declines if slip exceeds 3-5 deg/sec. Ex: Head bobbing and heel strike
More informationFactors Influencing Human Postures
Chapter 3 Factors Influencing Human Postures 3.1 Introduction Postures and motions generated by the human body are very difficult to simulate since the human body has so many interrelated muscles that
More informationMuscular System. Principles of Health Science Dr. Wood
Muscular System Principles of Health Science Dr. Wood Characteristics of muscles Excitability: : irritability or ability to respond to stimulus Contractibility: : ability to contract (become short and
More informationMuscular System. Student Learning Objectives: Identify the major muscles of the body Identify the action of major muscles of the body
Muscular System Student Learning Objectives: Identify the major muscles of the body Identify the action of major muscles of the body Structures to be identified: Muscle actions: Extension Flexion Abduction
More informationChapter 5. The Shoulder Joint. The Shoulder Joint. Bones. Bones. Bones
Copyright The McGraw-Hill Companies, Inc. Reprinted by permission. Chapter 5 The Shoulder Joint Structural Kinesiology R.T. Floyd, Ed.D, ATC, CSCS Structural Kinesiology The Shoulder Joint 5-1 The Shoulder
More informationSheep Brain Dissection
Sheep Brain Dissection http://www.carolina.com/product/preserved+organisms/preserved+animals+%28mammal s%29/sheep+organs/preserved+sheep+dissection.do Michigan State University Neuroscience Program Brain
More informationDiagram 2(i): Structure of the Neuron
Diagram 2(i): Structure of the Neuron Generally speaking, we can divide the nervous system into different parts, according to location and function. So far we have mentioned the central nervous system
More informationNervous System Organization. PNS and CNS. Nerves. Peripheral Nervous System. Peripheral Nervous System. Motor Component.
Nervous System Organization PNS and CNS Chapters 8 and 9 Peripheral Nervous System (PNS) connects CNS to sensory receptors, muscles and glands Central Nervous System (CNS) control/integrating center brain
More informationMuscular System: Muscle Tissue (Chapter 10) Lecture Materials for Amy Warenda Czura, Ph.D. Suffolk County Community College
Muscular System: Muscle Tissue (Chapter 10) Lecture Materials for Amy Warenda Czura, Ph.D. Suffolk County Community College Primary Sources for figures and content: Eastern Campus Marieb, E. N. Human Anatomy
More informationHuman Anatomy and Physiology II Laboratory
Human Anatomy and Physiology II Laboratory The Circulation (Two Weeks) 1 This lab involves two weeks work studying the vasculature of the human body. Both weeks involve the exercise in the lab manual entitled
More informationChapter 9 Nervous System
Chapter 9 Nervous System Nervous System function: The nervous system is composed of neurons and neuroglia. at the ends of peripheral nerves gather information and convert it into nerve impulses. When sensory
More informationMuscle Physiology. Lab 5. Human Muscle Physiology
Lab 5 Human At the beginning of lab you will have the opportunity for 2 bonus points! You must guess which person in the class will have: 1) Maximum Grip Force 2) Longest time to half-max Force (longest
More informationEXCITABILITY & ACTION POTENTIALS page 1
page 1 INTRODUCTION A. Excitable Tissue: able to generate Action Potentials (APs) (e.g. neurons, muscle cells) B. Neurons (nerve cells) a. components 1) soma (cell body): metabolic center (vital, always
More informationAnatomy and Physiology for Exercise and Health Level 3
Anatomy and Physiology for Exercise and Health Level 3 A/600/9051 Mock Paper There are 25 questions within this paper To achieve a pass you will need to score 18 out of 25 marks All questions are multiple
More informationTransverse Sections of the Spinal Cord
Transverse Sections of the Spinal Cord The spinal cord is perhaps the most simply arranged part of the CNS. Its basic structure, indicated in a schematic drawing of the eighth cervical segment (Figure
More informationPlyometric Training. Plyometric Training. chapter
chapter 16 Plyometric Training Plyometric Training David H. Potach, PT; MS; CSCS,*D; NSCA-CPT,*D Donald A. Chu, PhD; PT; ATC; CSCS,*D; NSCA-CPT,*D; FNSCA Chapter Objectives Explain the physiology of plyometric
More informationPractice Chapter 6. Figure 6.3. Multiple Choice Identify the choice that best completes the statement or answers the question.
Practice Chapter 6 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Voluntary muscle tissue is; a. smooth muscle b. skeletal muscle c. dense regular d.
More informationParts of the Brain. Chapter 1
Chapter 1 Parts of the Brain Living creatures are made up of cells. Groups of cells, similar in appearance and with the same function, form tissue. The brain is a soft mass of supportive tissues and nerve
More informationFunctions of the Brain
Objectives 0 Participants will be able to identify 4 characteristics of a healthy brain. 0 Participants will be able to state the functions of the brain. 0 Participants will be able to identify 3 types
More informationThe Reflex Arc and Reflexes Laboratory Exercise 28
The Reflex Arc and Reflexes Laboratory Exercise 28 Background A reflex arc represents the simplest type of nerve pathway found in the nervous system. This pathway begins with a receptor at the dendrite
More informationMuscles How muscles contract - The Sliding Filament Theory
Muscles How muscles contract - The Sliding Filament Theory A muscle contains many muscle fibers A muscle fiber is a series of fused cells Each fiber contains a bundle of 4-20 myofibrils Myofibrils are
More informationCerebellum and Basal Ganglia
Cerebellum and Basal Ganglia 1 Contents Cerebellum and Basal Ganglia... 1 Introduction... 3 A brief review of cerebellar anatomy... 4 Basic Circuit... 4 Parallel and climbing fiber input has a very different
More informationMuscle Energy Technique. Applied to the Shoulder
Muscle Energy Technique Applied to the Shoulder MUSCLE ENERGY Theory Muscle energy technique is a manual therapy procedure which involves the voluntary contraction of a muscle in a precisely controlled
More informationHomework Help Stroke
The Brain & Strokes Your brain is the most complex organ in your body. It is the command centre for everything you do, think, sense and say! It has over 100 billion special nerve cells called neurons.
More informationMUSCLE TISSUE. Larry Johnson Texas A&M University
MUSCLE TISSUE Larry Johnson Texas A&M University Objectives Histologically identify and functionally characterize each of the 3 types of muscle tissues. Describe the organization of the sarcomere as seen
More informationMuscles and Contraction
Muscles and Contraction Muscle tissue forms the organs called muscle. Three types of muscle tissue are (1) skeletal, (2) cardiac, and (3) smooth. Anatomy and Physiology Text and Laboratory Workbook, Stephen
More informationHuman Body Grade 3 Summative Assessment. Assessed Understandings
Human Body Grade 3 Summative Assessment Students will understand: Assessed Understandings 1. Bones, muscles, and joints function as a system allowing vertebrates to move and survive. 2. Structures and
More informationLecture Outline. Cardiovascular Physiology. Cardiovascular System Function. Functional Anatomy of the Heart
Lecture Outline Cardiovascular Physiology Cardiac Output Controls & Blood Pressure Cardiovascular System Function Functional components of the cardiovascular system: Heart Blood Vessels Blood General functions
More informationNerves and Nerve Impulse
Nerves and Nerve Impulse Terms Absolute refractory period: Period following stimulation during which no additional action potential can be evoked. Acetylcholine: Chemical transmitter substance released
More informationThe Muscular System. PowerPoint Lecture Presentations prepared by Jason LaPres. Lone Star College North Harris. 2012 Pearson Education, Inc.
11 The Muscular System PowerPoint Lecture Presentations prepared by Jason LaPres Lone Star College North Harris An Introduction to the Muscular System Learning Outcomes 11-1 Describe the arrangement of
More informationAP Biology I. Nervous System Notes
AP Biology I. Nervous System Notes 1. General information: passage of information occurs in two ways: Nerves - process and send information fast (eg. stepping on a tack) Hormones - process and send information
More informationElbow & Forearm. Notes. Notes. Lecture Slides - A.D.A.M. Lab Pics. Bones & Joints: Elbow & Forearm
Elbow & Forearm Elbow & Forearm Notes Lecture Slides - A.D.A.M. Lab Pics Notes Bones & Joints: The elbow joint is a combination of joints but common reference is usually to the articulation of the distal
More informationChapter 10: Muscles and Muscle Tissue
Chapter 10: Muscles and Muscle Tissue Chapter Objectives OVERVIEW OF MUSCLE TISSUE 1. Describe the three key functions of muscle. 2. Describe the four special properties of muscle tissue. SKELETAL MUSCLE
More informationDISSECTION OF THE SHEEP'S BRAIN
DISSECTION OF THE SHEEP'S BRAIN Introduction The purpose of the sheep brain dissection is to familiarize you with the threedimensional structure of the brain and teach you one of the great methods of studying
More informationHow To Control A Prosthetic Leg
OCCUPATIONAL THERAPY OUTCOMES WITH TARGETED HYPER- REINNERVATION NERVE TRANSFER SURGERY : TWO CASE STUDIES Stubblefield, K.A., 1,2 Milller, L.A., 1,3 Lipschutz, R.D., 1,3 Phillips, M.E., 1,2 Heckathorne,
More informationCHAPTER 16: THE AUTONOMIC NERVOUS SYSTEM
Unit 4: The Autonomic Nervous System 254 CHAPTER 16: THE AUTONOMIC NERVOUS SYSTEM Read: Chapter 16, pages 517-534. Read only the topics covered in lecture. We will not cover this chapter in detail. Complete
More informationStudent Academic Learning Services Page 1 of 8 Nervous System Quiz
Student Academic Learning Services Page 1 of 8 Nervous System Quiz 1. The term central nervous system refers to the: A) autonomic and peripheral nervous systems B) brain, spinal cord, and cranial nerves
More informationAUTONOMIC NERVOUS SYSTEM
AUTONOMIC NERVOUS SYSTEM Somatic efferent and ANS Somatic Efferent Control is over skeletal muscles. External environment This division of the PNS responds to some change in the external environment. single
More informationDivisions of the Skeletal System
OpenStax-CNX module: m46344 1 Divisions of the Skeletal System OpenStax College This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License 3.0 By the end of this
More informationAdrian Owens Research
*Classic View: Not entirely correct Nervous System Central Nervous System is made up of the brain and the spinal cord. Peripheral Nervous System is broken down into a component called the somatic division.
More informationHuman Physiology Study Questions-2
Human Physiology Study Questions-2 Action potentials: Handout-8, Chapter 8 1. Explain the positive feedback component of an action potential that is, how the opening of one voltage-gated sodium (or calcium)
More informationDiagram showing Systemic and Portal Circulation
Diagram showing Systemic and Portal Circulation The Lymphatic System The Lymphatic System comprises of lymphatic capillaries, lymphatic vessels, nodes and ducts. Lymph fluid is not blood plasma, it contains
More informationBiology 141 Anatomy and Physiology I
Fall 2016 Biology 141 Anatomy and Physiology I COURSE OUTLINE Faculty Name: Enter Faculty Name Here Program Head: Enter Program Head Here Dean s Review: Dean s Signature: Date Reviewed: / / Revised: Fall
More informationLaboratory Guide. Anatomy and Physiology
Laboratory Guide Anatomy and Physiology TBME04, Fall 2010 Name: Passed: Last updated 2010-08-13 Department of Biomedical Engineering Linköpings Universitet Introduction This laboratory session is intended
More informationAnatomy & Physiology Bio 2401 Lecture. Instructor: Daryl Beatty Nervous System Introduction Part 1
Anatomy & Physiology Bio 2401 Lecture Instructor: Daryl Beatty Nervous System Introduction Part 1 Nervous System Introduction Chapter 11 Section A Sequence 4.1 DB Nervous system 1 Intro Presentations 4.2,
More informationElbow & Forearm H O W V I T A L I S T H E E L B O W T O O U R D A I L Y L I V E S?
Elbow & Forearm H O W V I T A L I S T H E E L B O W T O O U R D A I L Y L I V E S? Clarification of Terms The elbow includes: 3 bones (humerus, radius, and ulna) 2 joints (humeroulnar and humeroradial)
More informationTHE SPINAL CORD AND THE INFLUENCE OF ITS DAMAGE ON THE HUMAN BODY
THE SPINAL CORD AND THE INFLUENCE OF ITS DAMAGE ON THE HUMAN BODY THE SPINAL CORD. A part of the Central Nervous System The nervous system is a vast network of cells, which carry information in the form
More informationAnatomy of Human Muscles
Anatomy of Human Muscles PURPOSE: To develop skill in identifying muscle names and locations relative to other regional structures. To determine origin, insertion and principle action of muscles through
More informationNervous Tissue Dr. Archana Rani Associate Professor Department of Anatomy KGMU UP, Lucknow
13.01.2015 Nervous Tissue Dr. Archana Rani Associate Professor Department of Anatomy KGMU UP, Lucknow Introduction Property of irritability and conductivity Respond to various types of stimuli Distributed
More informationExercise 5 Nervous Tissue
Exercise 5 Nervous Tissue Objectives After completing the laboratory exercise for nervous tissue you should be able to: Introduction Identify a "typical" multipolar neuron in the light microscope. Identify
More informationSmooth Muscle. Learning Objectives.
Smooth Muscle. Learning Objectives. At the end of this course, you should be able to : 1. describe the structure of smooth muscle 2. describe where smooth muscle occurs within the body 3. discuss the structural
More informationExplore the Neuroscience for Kids Web Site (ANSWERS) Start at: http://faculty.washington.edu/chudler/neurok.html
NAME Explore the Neuroscience for Kids Web Site (ANSWERS) Start at: http://faculty.washington.edu/chudler/neurok.html On the left side, click on Explore, then click on The Neuron, then click on Millions
More informationAthletic/Sports Massage
CHAPTER18 Athletic/Sports Massage COMPLETION: In the space(s) provided, write the word(s) that correctly complete(s) each statement. 1. The 1972 Olympic gold medalist who was known as the flying Finn and
More informationActive Isolated Stretching: The Mattes Method
Active Isolated Stretching: The Mattes Method Active Isolated Stretching began to develop in 1970. What began as an attempt to find specific techniques to alleviate pain and improve everyday performance
More informationTeppe Treppe: A staircase increase in tension production after repeated simulation, even though the muscle is allowed to relax between twitches.
Part II, Muscle: Mechanisms of Contraction and Neural Control, Chapter 12 Outline of class notes Objectives: After studying part II of this chapter you should be able to: 1. Discuss how contractile force
More information