What happens if the threshold of excitation is reached?
A) The sodium-potassium pump turns on.
B) An action potential is generated.
C) Potassium flows into the cell.
D) The cell becomes hyperpolarized.

Question

Quizplus · Accepted Answer

When the threshold of excitation is reached, an action potential is generated. This is the point at which the depolarization of the neuron reaches a critical level that triggers an all-or-nothing electrical impulse to be sent down the axon.

What Happens If the Threshold of Excitation Is Reached