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Chapter 11 Test Part 1

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Across
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Extensible and Elastic. Stretches slightly under tension and recoils when released. Resists excessive stretching and protects muscle form injury. Returns muscle to its resting length. Contributes to power output and muscle efficiency.
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Plasma membrane of a muscle fiber
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Stem cells that fused to form each muscle fiber early in development
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Capable of being stretched between contractions
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(Responsiveness) To chemical signals, stretch, and electrical changes across the plasma membrane
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Flattened nuclei pressed against the inside of the sarcolemma
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Alternating light and dark transverse bands. The results from arrangement of internal contractile proteins.
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Long protein cords occupying most of sarcoplasm
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Returns to its original rest length after being stretched
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Attachments between muscle and bone matrix. Continuous with collagen fibers of tendons. In turn, with connective tissue of bone matrix.
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Muscle cell is muscle fiber(30 cm long)
Down
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Connective tissue surrounding entire muscle
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Red pigment; provides some oxygen needed for muscle activity
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Usually subject to conscious control
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Shortens when stimulated
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Muscle that is voluntary, striated muscle usually attached to bones
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Connective tissue around muscle cell
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Local electrical change triggers a wave of excitation that travels along the muscle fiber
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Packed into spaces between myofibrils
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Connective tissue around muscle fascicle
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Cytoplasm of a muscle fiber
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Carbohydrate stored to provide energy for exercise
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Cells unspecialized myoblasts remaining between the muscle fiber and endomysium. Play a role in regeneration of damaged skeletal muscle tissue.