Muscular System

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Last updated 3:12 AM on 8/25/26
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13 Terms

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origin

placement attachment for the stationary bone (stable)

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insertion

placement of muscle attachment for the bone it moves (moves)

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innervation

the nervous supply to the muscle (nerve)

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action

the motion the muscle creates (verb)

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excitability

ability to respond to stimuli and produce electrical signals

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contractility

ability to shorten and generate force once excited

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extensibility

ability to stretch without damaging the tissue

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elasticity

ability to return to normal length after being extended

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thermal

ability to produce heat energy

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myofibrils

contractile elements of a muscle

<p>contractile elements of a muscle</p>
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epimysium

surrounds the whole muscle (outside)

<p>surrounds the whole muscle (outside)</p>
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perimysium

surrounds bundles (fascicles) of 10-100 muscle cells (around)

<p>surrounds bundles (fascicles) of 10-100 muscle cells (around)</p>
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endomysium

separates individual muscle cells (inside)

<p>separates individual muscle cells (inside)</p>