12, 13,14
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| a sheath of areolar connective tissue that wraps around individual skeletal muscle fibers | endomysium
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| dense irregular connective tissue that separates a muscle into groups of individual muscle fibers | perimysium
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| bundles of muscle fibers | fascicles
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| the outermost connective tissue layer that encircles an entire skeletal muscle | epimysium
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| dense irregular connective tissue that lines the body wall and limbs and holds functional muscle units together | fascia
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| a cord of dense regular connective tissue that attaches muscle to the periosteum of bone | tendon
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| muscle cell | muscle fiber
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| areolar and adipose connective tissue that separates muscle from skin | subcutaneous layer
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| connective tissue elements extended as a broad, flat layer | aponeurosis
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| a two-layer tube of fibrous connective tissue enclosing certain tendons | tendon (synovial) sheath
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| synapse between a motor neuron and a muscle fiber | neuromuscular junction
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| invaginations of the sarcolemma from the surface toward the center of the muscle fiber | transverse tubules
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| myoblasts that persist in mature skeletal muscle | satellite cells
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| plasma membrane of a muscle fiber | sarcolemma
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| oxygen-binding protein found only in muscle fibers | myoglobin
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| Ca+ storing tubular system similar to smooth endoplasmic retuculum | sarcoplasmic reticulum
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| the contracting unit of a skeletal muscle fiber | sacomere
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| middle area in the sarcomere where thick and thin filaments are found | A band
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| area in the sarcomere where only thin filaments are present but thick filaments are not | I band
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| separates the sacrcomeres from each other | Z disc
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| area of only thick filaments | H zone
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| cytoplasm of a muscle fiber | sarcoplasm
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| composed of supporting proteins holding thick filaments together at the H zone | M line
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| has fibers joined by intercalated discs | cardiac muscle
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| thick and thin filaments are not arranged as orderly sarcomeres | smooth muscle
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| uses satellite cells to repair | skeletal muscle
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| striated | skeletal & cardiac muscle
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| contraction begins slowly but lasts for long periods | smooth muscle
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| has an extended contraction due to prolonged calcium delivery from both the sarcoplasmic reticulum and the interstitial fluid | cardiac muscle
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| does not exhibit autorhythythmicity | skeletal muscle
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| uses pericytes to repair damaged muscle fibers | smooth muscle
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| uses troponin as a regulatory protein | skeletal muscle & cardiac muscle
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| can be classified as single-unit or multiunit | smooth muscle
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| can be autorhthmic | smooth
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| uses calmodulin as a regulatory protein | cardiac muscle & smooth muscle
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