The end of the rising phase of an action potential occurs when the
A) sodium channels close.
B) sodium channels open.
C) potassium channels open.
D) potassium channels close.
E) both A and D

Question

Quizplus · Accepted Answer

The end of the rising phase of an action potential occurs when the sodium channels close, stopping the influx of sodium ions that causes the rapid depolarization of the membrane.

The End of the Rising Phase of an Action Potential