musclereview1 - Anatomy Review: Skeletal Muscle Tissue...

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Anatomy Review: Skeletal Muscle Tissue Graphics are used with permission of: adam.com ( http://www.adam.com/ ) Benjamin Cummings Publishing Co ( http://www.aw.com/bc ) Page 1. Introduction • Skeletal muscle cells have unique characteristics which allow for body movement. Page 2. Goals • To compare and contrast smooth muscle cells, cardiac muscle cells, and skeletal muscle cells. • To review the anatomy of the skeletal muscle. • To examine the connective tissue associated with the skeletal muscle. • To review the intracellular organization of the skeletal muscle cell. Page 3. Comparison of Skeletal, Cardiac and Smooth Muscle Cells Skeletal Muscle Cell: Cardiac Muscle: Smooth Muscle Cell: Elongated Cells Branching Cells Spindle-Shaped Cell Multiple Peripheral Nuclei Single Central Nucleus Single Central Nucleus Visible Striations Visible Striations Lack Visible Striations Voluntary Involuntary Involuntary ** Now is a good time to go to quiz question 1: • Click the Quiz button on the left side of the screen. • After answering question 1, click the Back to Topic button on the left side of the screen. • To get back to where you left off, click on the scrolling page list at the top of the screen and choose "4. Whole Skeletal Muscle". Page 4. Whole Skeletal Muscle • Skeletal muscles attach to bones via tendons. Page 5. Internal Structure of a Skeletal Muscle • Skeletal muscles are composed of connective tissue and contractile cells. • The connective tissues surrounding the entire muscle is the epimysium. Bundles of muscle cells are called fascicles. The connective tissues surrounding the fascicles is called perimysium. • Label this diagram: Interactive Physiology
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Page 6. Internal Structure of a Fascicle • Important Points About Endomysium: • Made of connective tissue. • Surrounds individual muscle cells. • Functions to electrically insulates muscle cells from one another. • Three connective tissue layers of the muscle (endomysium, perimysium, and epimysium): • Bind the muscle cells together. • Provide strength and support to the entire muscle. • Are continuous with the tendons at the ends of the muscle. • Label this diagram: Page 7. Internal Structure of a Skeletal Muscle Cell • Label this diagram: Interactive Physiology 2
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Muscle fibers : Alternative name for skeletal muscle cells. Nucleus
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This note was uploaded on 10/18/2010 for the course BIO 2402 taught by Professor Opara during the Spring '10 term at Lone Star College.

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musclereview1 - Anatomy Review: Skeletal Muscle Tissue...

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