2-17 Muscle structure function

2-17 Muscle structure function - Skeletal Muscle Function...

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Skeletal Muscle Function Muscle  structure  How are muscles formed? How do muscles contract? What are the different muscle fiber types? How does fiber type affect performance? Muscles: structure 3 basic types Cardiac Smooth Skeletal Skeletal muscle  is made of: Muscle                                                                                        Fascia (connective tissue)    nerves 1.  Muscle  fibers Muscle fibers are made up of                                                                                                                      which contain “contractile” proteins  form “muscle” 2.  Fascia Sheath that                                                                                                                  layers of skeletal muscle Fascia Form of connective tissue. Provides a “sliding and gliding” environment for muscles; suspends organs in their proper place; transmits movements from muscle to the bones they are attached to; and provides a supportive and mobile “wrapping” for nerves and blood vessels as they pass through and between muscles. Fascia:  muscle wrap 1.  Epimysium (outer) 2.  Perimysium (middle) 3.  Endomysium (inner) Connective tissue:                                                                                 mysi     um Layer of connective tissue/fascia around the entire muscle (all the bundles) Epi=outer Connective tissue Perimysium 1
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Skeletal Muscle Function Tissue surrounding individual                                                                                 of muscle fibers Peri=middle Connective tissue  Endomysium Tissue between individual fibers Endo=                                                                                                        Connective tissue: tendons “non-stretchy” fascia Intramuscular connective tissue merges with dense connective tissue at each end of the muscle to attach it to                                                        . Connective tissue tendons
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This note was uploaded on 11/13/2011 for the course KIN 316 taught by Professor Smith during the Spring '11 term at University of Texas at Austin.

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2-17 Muscle structure function - Skeletal Muscle Function...

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