Which of the following statements about action potentials is correct?
A) Action potentials for a given neuron vary in magnitude.
B) Action potentials for a given neuron vary in duration.
C) Action potentials are propagated down the length of the axon.
D) Movement of ions during the action potential occurs mostly through the sodium pump.

Question

Quizplus · Accepted Answer

Action potentials are propagated down the length of the axon. They do not vary in magnitude or duration within a given neuron, as they are all-or-nothing events. Movement of ions during the action potential occurs through ion channels, not the sodium pump.

Which of the Following Statements About Action Potentials Is Correct