The refractory period for voltage-gated channels helps in maintaining operational integrity of the channels. Since these channels are voltage-gated, they open upon reaching the threshold membrane potential. However, these won't close until resting potential is restored and the resting potential cannot be restored unless the flow of ions stop.
The absolute refractory period is the time
A. between injury to an axon and recovery of function.
B. it takes a neurotransmitter to diffuse across a synaptic cleft.
C. following an action potential during which a second action potential cannot be initiated regardless of stimulus strength.
D. following birth when neurons can still reproduce.
E. it takes to reach threshold via temporal summation.
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