A neuron that has just fired an action potential cannot be immediately restimulated to fire a second action potential. The short interval of time during which restimulation is not possible is called
A) hyperpolarization.
B) the resting potential.
C) depolarization.
D) repolarization.
E) the refractory period.

Question

Quizplus · Accepted Answer

The refractory period is the brief period of time after an action potential in which it is temporarily unable to be restimulated, due to the inactivation of voltage-gated sodium channels. This helps ensure that action potentials are unidirectional and do not overlap or blur together.

A Neuron That Has Just Fired an Action Potential Cannot