All of the following are events in an action potential except
A) membrane depolarization.
B) opening of leak channels.
C) opening of voltage-gated channels.
D) reaching threshold.
E) entering a refractory period.

Question

Quizplus · Accepted Answer

Opening of leak channels is not an event in an action potential. Leak channels are always open, allowing a small amount of ion movement across the membrane. The events that occur during an action potential include membrane depolarization, opening of voltage-gated channels, reaching threshold, depolarization resulting in the influx of positively charged ions, repolarization resulting in the efflux of positively charged ions, and entering a refractory period.

All of the Following Are Events in an Action Potential