An action potential occurs
A) if the membrane potential reaches a threshold value.
B) when negative proteins and ions rapidly enter the cell.
C) when the inside of the cell becomes negative compared to the outside.
D) when there is repolarization.
E) All of these are correct.

Question

Quizplus · Accepted Answer

An action potential occurs if the membrane potential reaches a threshold value, typically around -55 to -50 mV in neurons. The other options are not accurate descriptions of the process of an action potential.

An Action Potential Occurs