When an action potential is over and the membrane has returned to resting potential, the voltage-gated sodium channel:
A) is closed and not capable of opening
B) is closed and capable of opening
C) is open
D) open and not capable of closing
E) two of these answers.

Question

Quizplus · Accepted Answer

After an action potential, the voltage-gated sodium channels close and return to a state where they are capable of opening again when the membrane potential reaches the threshold.

When an Action Potential Is Over and the Membrane Has