refractory period of neurons (exam4)

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Author:
rcrchick
ID:
14853
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refractory period of neurons (exam4)
Updated:
2010-04-16 18:49:28
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exam4 refractory period neurons
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exam4 refractory period of neurons
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  1. what is the time of lost excitability?
    time between depolarization and repolarization
  2. what is the length of the refractory period?
    • it varies with diameter of neuron
    • a) large diameter neurons-> have a refractory period=o.5 msec(millisec)
    • b)small diameter neurons-> have a refractory period= 4.0msec
  3. what is the speed of nerve impulse effected by?
    presence or absence of a myolin sheath ( see drawing in notes)
  4. what is saltatory conduction?
    • nerve impulse jumps from node of ranvier to node of ranvier in a myelinated neuron
    • -->faster transmission of nerve impulse

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