Chapter 9
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Striated and voluntary | skeletal muscle
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| found in the walls of organs or viscera | smooth muscle
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| found in the walls of blood vessels | smooth muscle
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| striated and involuntary | cardiac muscle
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| found in the heart | cardiac muscle
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| nonstriated and involuntary | smooth muscle
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| found attached to bones | skeletal muscle
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| the only type of muscle that is nonstriated | smooth muscle
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| the only type of muscle that is voluntary | skeletal muscle
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| must be innervated by a somatic motor nerve | skeletal muscle
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| cordlike structure that attaches muscle to bone | tendon
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| small bundles of muscle fibers | fascicles
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| connective tissue that surrounds individual muscle fibers | endomysium
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| flat sheetlike fascia that attaches muscle to muscle or muscle to bone | aponeurosis
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| connective tissue that surrounds the fascicles or bundles | perimysium
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| connective tissue that surrounds a whole skeletal muscle | epimysium
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| series of contractile units that make up each myofibril; extends from Z line to Z line | sacromere
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| Thin protein filaments that extend toward the center of the sacromere from the Z lines | actin
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| thick protein filaments whose "heads" form cross-bridges when they interact with the thin filaments | myosin
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| Calcium is stored within this structure in the relaxed muscle | sarcoplasmic reticulum (SR)
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| an extension of the sarcolemma or cell membrane that penetrates the interior of the muscle; the electrical signal runs along this membrane toward the sarcoplasmic reticulum | t tubule
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| the temporary connection formed when the myosin heads interact with the actin, causing muscle contraction | cross-bridge
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| the troponin-tropomyosin complex and this protein are called the thin filament | actin
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| the muscle responsible for most of the movement in a group of muscles; called the chief muscle | prime mover
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| muscle attachment to the moveable bone | insertion
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| an increase in the size of a muscle because of overuse | hypertrophy
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| muscle attachment to the stationary bone | origin
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| helper muscle; works with other muscles to produce the same movement | synergist
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| abnormal formation of fibrous tissue in muscles; preventing normal mobility | contracture
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| muscle that opposes the action of another muscle | antagonist
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| wasting away or decrease in the size of the muscles | atrophy
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| classified as disuse, denervation and senile | atrophy
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