An action potential registers an electrical charge of
A) -70 millivolts.
B) -55 millivolts.
C) +40 millivolts.
D) +70 millivolts.

Question

Quizplus · Accepted Answer

An action potential is a rapid change in the electrical charge across the membrane of a neuron. The resting potential of a neuron is approximately -70 millivolts, but during an action potential, the charge rapidly depolarizes to approximately +40 millivolts before returning to a negative resting state. Therefore, the correct answer is C, as it represents the electrical charge during the peak of an action potential.

An Action Potential Registers an Electrical Charge of