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18 Cards in this Set
- Front
- Back
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origin?
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usually more proximal and less moveable (end of muscle)
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insertion?
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usually less proximal and more moveable (end of muscle)
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fast twitch fibers?
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1. works faster and powerful
2.uses ATP quickly 3.white in color 4.less myoglobin 5.fatigues quickly |
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slow twitch fibers?
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1.contracts slower
2.uses ATP slowly 3.red/dark in color 4.more myolgobin 5.fatigue resisent |
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myoglobin?
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muscle protein that stores oxygen locally
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threshold?
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minimal stimulation need for a muscle cell to contract
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all or none principle?
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an individual muscle cell contracts completely or not at all
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tetani?
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a sustained muscle contraction for ANY reason
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isotonic?
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EQUAL STRENGTH of a contraction and a vary of length
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isometric?
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EQUAL LENTH contraction and a vary of strength or force
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muscle fatigue?
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decreased ability to contract a muscle due to a build up of acids in the sarcoplasm
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muscle soreness?
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damage or tiny tears and rips to the sarcolemma
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atrophy?
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decrease in size of muscle cell due to limited or non use
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hypertrophy?
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increase in size of muscle cell due to use
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rigor mortis?
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type of tetani (sustained contraction of muscle) b/c the calicum is released and there is no ATP to pump it back into the sarcoplasmic reticulum-so the muscles cannot relax
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prime mover?
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muscle primarily responsible for a specific action
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antagonist
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the opposites of prime mover/synergist
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synergist
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muscle that works with the prime mover to increase effectiveness (resist and work in the opposite direction)
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