In order for an action potential to occur,a certain membrane potential called the ______ must be reached.
A)sodium-potassium pump
B)depolarization
C)hyperpolarization
D)threshold

Question

Quizplus · Accepted Answer

The threshold is the membrane potential that must be reached (-55mV to -40mV) in order for an action potential to be triggered. Once this threshold is reached, depolarization occurs and the action potential is generated. The sodium-potassium pump is responsible for maintaining the concentration gradient of ions across the cell membrane, but it does not directly contribute to the generation of an action potential. Hyperpolarization is a change in membrane potential that makes it more negative, and can occur after an action potential as the cell returns to its resting state.

In Order for an Action Potential to Occur,a Certain Membrane