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| plots sarcomere length versus tension |
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| part of the sarcomere - makes up the inner thicker part (thick filaments) |
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| part of the sarcomere - thin filaments - the outside part |
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| muscle contracts at a constant length |
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| the muscle changes its length |
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| tells you about the stiffness of a spring |
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| one alpha motor neuron and all of the muscle fibers it inhibits |
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| number of muscle cells divided by number of innervating alpha motor neurons. estimates the size of the motor unit. |
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| control firing rates of alpha motor neurons through feedback inhibition - activated by axon collaterals of same cells they inhibit |
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| large motor neurons, axons conduct rapidly, burst at high frequencies, fast rise in tension, fast decay in tension, rapid fatigue, large fibers, big motor units, stored glycogen, sparse mitochondria, poor blood supply |
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| small motor neurons, axons conduct slowly, tonically active during movement, slow rise in tension, slow decay in tension, slow fatigue, small fibers, small muscle unit, little glycogen, rich blood supply |
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Definition
| controlling the number of active motor untis |
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Definition
| varying the firing rates of motor units already recruited |
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| single action potential produces this |
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| longer twitch, evoked in short intervals, fuse into sustained contraction |
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| smaller motor units recruited before larger motor units to make movement smooth |
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