E9EA83C40B394E6F8E1877BB77EC555C

E9EA83C40B394E6F8E1877BB77EC555C - Chapter 10 Muscles...

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Chapter 10 Muscles
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Functions of Muscles Body movements Body positions Storing and moving substances Generating heat
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Outside to Inside Fascia Epimysium Perimysium Fascicle Endomysium Muscle Fiber Myofibril
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Components of a Myofiber (Muscle Cell) Sarcolemma Sarcoplasm Myoglobin T tubules Multiple nuclei Multiple mitochondria Myofibrils
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Components of a Myofibril Z disc (line) = actin attachment M line = myosin attachment A Band = overlap of actin and myosin I Band = actin fibers Actin = thin Myosin = thick
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Sequence of a Contraction Actin and Myosin Interact Z to Z lines move closer together Sarcomere gets smaller Group of sarcomeres contract Myofibril contracts Muscle cell contracts Fascicle contracts Muscle contracts
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Sequence of Neurological Events Neuron stimulates muscle fiber Release of Acetylcholine Release of Calcium Calcium binds to troponin and removes it
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E9EA83C40B394E6F8E1877BB77EC555C - Chapter 10 Muscles...

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