The magnitude of the action potential is dependent upon the extent to which the change in membrane potential is above threshold.

Question

Quizplus · Accepted Answer

The magnitude of an action potential is not dependent on how much the membrane potential exceeds the threshold; it is an all-or-nothing event where, once the threshold is reached, the magnitude of the action potential is consistent, determined by the properties of the cell's ion channels.

The Magnitude of the Action Potential Is Dependent Upon the Extent