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Muscles- Microscopic Structure

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Michael Burke

on 26 November 2012

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Transcript of Muscles- Microscopic Structure

Welcome Skeletal Muscle identify the microscopic structures of skeletal muscle tissue Today we will: identify the types of muscle tissue. Muscle Types Cardiac Smooth Skeletal Involuntary Our Primary Focus Striated Wide Spread Large Number of Mitochondria Highly Aerobic Can regenerate but very slowly. Intercalated discs support synchronized contraction of cardiac tissue The lack of striations gives it more elasticity In a WIDE array of body structures. Sarcomere Muscle Fiber Myofibril Sarcomere Functional Unit of Muscle A "train" of sarcomeres Sarcoplasmic Reticulum A membrane that surounds the Myofibril and releases calcium as part of the sliding filament theory. Similar to a Smooth ER The actual Muscle Cell A collection/bundle of Myofibrils Endomysium Connective Tissue that holds muscle cells together. Huge and Multinucleated Muscle Fascicle A collection of Muscle Fibers/Cells Perimysium Connective Tissue that Binds Muscle Fascicles
Blood Vessels and Nerves Are Suspended Throughout The organ of the Muscular System Epimysum The Connective Tissue that Binds the Muscle Together
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