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9 Cards in this Set
- Front
- Back
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a motor unit is a ___ neuron and all the ___ it innervates
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alpha motor
muscle fibers |
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renshaw cells receive input from a ___ and provide ___
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alpha motor neuron collateral
recurrent inhibition |
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2 proprioceptive organs in muscle
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muscle spindle
golgi tendon organ |
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fibers inside muscle spindle are ___, others are ___
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intrafusal
extrafusal |
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muscle spindles are connected ___ly with extrafusal fibers and sense ___.
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in parallel with
fiber length |
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muscle spindles transduce stretch into ___ which causes ____
this reflex is called ___ |
increased firing rate
stimulation of alpha motor neurons myotactic reflex |
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gamma motor neurons do ___
this allows ___ |
cause contraction of intrafusal fibers
voluntary muscle contraction without triggering myotactic reflex |
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GTOs are connected ___ly with extrafusal fibers and sense ___
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in serial with
muscle tension |
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patellar reflex involves SC levels ___
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L2-L4
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