Skeletal Muscle Tissue Anatomy Pages 283-287. The connective tissue sheaths of the epimysium, perimysium, and endomysium are continuous with one another.

Slides:

Advertisements

Similar presentations

The Muscular System.

Advertisements

The Muscular System Chapter 7

Structure and Function of Skeletal Muscle

Muscle Function.

Muscular System.

Copyright © 2006 Lippincott Williams & Wilkins. Muscular System Chapter 11 Part 2.

Muscle Tissue and Organization

Chapter 8 Muscular System. Introduction Three types of muscles: – Skeletal – Smooth – Cardiac.

Vocabulary: Muscle structure- p Tendon 2.Skeletal muscle 3.Myofibril 4.Sarcomere 5.Z lines 6.Thin filament -actin 7.Thick filament.

Anatomy and Physiology I

The Muscular System.

Muscle Structure and Function

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Muscle Overview  The three types of muscle tissue are skeletal, cardiac, and.

7.2 Microscopic Anatomy and Contraction of Skeletal Muscle

Muscle Contraction Tendon – cord of dense fibrous tissue attaching the muscle to a bone. Epimysium – the sheath of fibrous connective tissues surrounding.

Skeletal Muscle Tissue

Chapter 8-Muscular System. Case Study # 1 Signs and Symptoms: -Respiratory Acidosis -Accelerated oxygen consumption -Extreme heat production Case Study.

Muscle & Muscle Tissue. Types of Muscle Tissue Skeletal Are striated Controlled voluntarily Tires easily.

Muscle Tissue: An Introduction. Muscles make up close to half of the body mass and are unique in transforming chemical energy (ATP) into mechanical energy.

Skeletal Muscle Tissue Contraction Chapter 10 Anatomy and Physiology Mr. Knowles Liberty Senior High School.

Muscles are made of many individual cells called fibers The Fascia connects the individual fibers to form a muscle and it separates muscles from each.

 Produce skeletal movement  By contraction of muscle fibers  True of all = cardiac, smooth, skeletal  Maintain posture/body position  Some muscles.

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Muscle Types.

Muscle Tissue A primary tissue type, divided into: A primary tissue type, divided into: –skeletal muscle –cardiac muscle –smooth muscle.

PowerPoint ® Lecture Slides prepared by Leslie Hendon, University of Alabama, Birmingham HUMAN ANATOMY fifth edition MARIEB | MALLATT | WILHELM 10 Copyright.

Muscle Types Skeletal Smooth Cardiac Until further notice, we are discussing skeletal muscle.

Exercise 14 Microscopic Anatomy, Organization, and

Muscular System Chapter 7 Movement Unit. 2 Fig. 7.1 Review:

Warm-Up Based on what you know about Latin root words, what do you think these terms refer to? Sarcomere Sarcoplasm Myofibril Epimysium Perimysium Endomysium.

II. Skeletal Muscle Overview A. Skeletal Muscle Distinguishing Characteristics Striated Voluntary Multi-nucleated B. Functions Movement Maintain Posture.

Three types of muscle Skeletal – attached to bone

Structural Overview.  excitability - responds to stimuli (e.g., nervous impulses)  contractility - able to shorten in length  extensibility - stretches.

Physiology, drugs and disease Muscle Structure and Function FdSc FISM Year 2 Janis Leach 15/01/10.

Skeletal Muscle Microscopic Anatomy Chapter 10. Microscopic Anatomy Muscle fibers = muscle cells: long and multinucleate Sarcolemma: cell membrane myoglobinSarcoplasm:

Muscular System The 3 Types of Muscles SKELETAL MUSCLE STRUCTURE.

Chapter 9 Muscular System.

Gross Anatomy of Skeletal Muscle

Muscle Tissue & Skeletal Muscle Notes. Interesting Muscle Facts What is the biggest muscle in your body?

MUSCULAR SYSTEM Structure and Function. Skeletal Muscle Properties 1. Excitability = ability to receive and respond to a stimulus  Also called irritability.

Muscular Contraction.

Do Now 10/14/14 1.What are the different types of muscle tissue in the body? 2.Which types of muscle tissue are voluntary? Involuntary? 3.Describe what.

MUSCULAR SYSTEM Part 3: Muscle Structure & Contraction.

Chapter 10 Muscle Tissue Muscle tissue functions Movement Posture

Muscle Contraction.  We have 400+ muscles in the body which comprise 40-50% of the total body weight  There are three types of muscle:  Smooth  Cardiac.

Skeletal Muscle Histology

Mansoura Faculty of Medicine

Chapter 10 Muscle Tissue Muscle tissue functions Movement Posture

Organization of Skeletal Muscles

MUSCLE TISSUE PPT1 What are the parts of muscles?.

Quiz 7 The Muscular System.

Muscles (View Video).

Introduction The Muscular System.

Introduction The Muscular System.

Muscle Anatomy.

Types of Muscle Tissues

The Muscular System.

The Muscular System.

Muscular system Chapter 6.

Exercise 10 Muscle histology.

Arrangement of a Muscle

Figure 12.1 Microscopic anatomy of skeletal muscle.

Muscle Fiber Anatomy.

Anatomy of Skeletal Muscle

Muscular system Chapter 6.

Notes: Skeletal Muscle Anatomy

Exercise 10 Muscle histology.

Review: Fig. 7.1.

Types of Muscle Skeletal Striated Voluntary Multinucleated Smooth

Muscle Anatomy.

7 The Muscular System.

Presentation transcript:

Skeletal Muscle Tissue Anatomy Pages

The connective tissue sheaths of the epimysium, perimysium, and endomysium are continuous with one another and the tendon which attaches the muscle to the bone. These sheaths contribute to muscle elasticity, provide entry and exit routes for nerves and blood vessels, harness the forces of contraction, and reinforce the muscle as a whole.

The arrow points out the perimysium. The asterisk is at the center of a fascicle. Notice the peripheral nerve in lower left corner.

Healthy adult (left) and child muscle tissue at 200x magnification. Notice the size difference of muscle fibers.

In this healthy adult muscle tissue, notice the darkly stained nuclei (100s per fiber) and the rather inconspicuous endomysium.

Muscular Dystrophy: the name given to a group of diseases that are, for the most part, genetically determined and cause gradual wasting of muscle with accompanying weakness and deformity.

Myopathic changes. In this case, histopathology of the gastrocnemius shows Duchenne muscular dystrophy. The muscle fibers are being replaced by adipose tissue.

Endomysial fibrosis is another form of muscular distrophy.

The muscle cell a.k.a. “fiber” is a long cylindrical cell with… Many nuclei Sarcolemma: cell membrane Sarcoplasm: cytoplasm Myofibrils:-(100s to 1,000s per fiber) -contractile element of cell. -80% of cell by volume.

Muscle cell showing features from previous slide. Notice the striated appears of cell.

The sarcomere is the contractile unit of the muscle cell and gives it’s striated appearance.

A. Myosin molecule: B. Thick filament: C. Filamentous actin: D. Tropomyosin: E. Globular actin:

Sarcolemma: Possesses a transmembrane potential that allows for electrical impulse to flow across the surface of the entire muscle fiber. Sarcoplasmic reticulum (SR): Stores Ca 2+ ions. Plays a key role in muscle contraction. T tubules: Conduct action potentials ( a.k.a. impulses) through out the muscle fiber.

Sliding Filament Model of Contraction: During muscle contraction thin (actin) filaments slide past thick (myosin) filaments so that actin and myosin overlap to a greater degree. – H and I bands narrow – Z discs move closer together – Overall length of fiber and muscle shortens