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refractory period of neurons (exam4)
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what is the time of lost excitability?
time between depolarization and repolarization
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
what is the speed of nerve impulse effected by?
presence or absence of a myolin sheath ( see drawing in notes)
what is saltatory conduction?
nerve impulse jumps from node of ranvier to node of ranvier in a myelinated neuron
-->faster transmission of nerve impulse
Author
rcrchick
ID
14853
Card Set
refractory period of neurons (exam4)
Description
exam4 refractory period of neurons
Updated
2010-04-16T22:49:28Z
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