Fall Exam 5
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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| basic unit of motor activity | single motor neuron + all the muscle it synapses on
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| Lower Motor Neuron | cell body in spinal cord or in brainstemaxon terminates on musclesactively innervates muscle
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| Upper Motor Neuron | cell body in brainstem or cotexsynapses on lower motor neuronfine tunes lower motor neuron
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| Reflex Arc | receptor, afferent sensory neuron, efferent motor neuron, effector
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| muscle spindle | monitors muscle length and rate of change, organized in parallel with extrafusal muscle fibers
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| Golgi Tendon Organ | monitors muscle tension, organized in series with extrafusal muscle fibers
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| Myostatic reflex basic info | simplest reflex, monosynaptic reflex between muscle spindle and motor neuron, stretch
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| Myotatic reflex | contraction/excitation of agonist muscle, relaxation/inhibition of antagonist muscle, comes back to muscle that started sensory, interneuron inhibits antagonist muscle
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| Patellar reflex test | stretch reflex, maintain posture
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| Inverse myotatic reflex | lengthening, disynaptic reflex between GTO and motor neuron, interneuron inhibits agonist muscle, protects against muscle damage during extreme muscle exertion
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| The withdrawal (flexor) refles is initiated by? | noxious stimuli
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| A Single Stimulus causes | activation of hip and leg flexors, activation on the opposite side to shift weight to that leg
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Created by:
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