Depolarization occurs when the neuron becomes
A)less negative due to the influx of sodium ions.
B)more negative due to the influx of sodium ions.
C)more negative due to the influx of potassium.
D)less negative due to the outflow of sodium ions.
E)more negative due to the outflow of sodium ions.

Question

Quizplus · Accepted Answer

Depolarization of a neuron occurs when the neuron's membrane potential becomes less negative, which is primarily due to the influx of sodium ions (Na+) into the neuron. This process reduces the electrical difference across the membrane, moving the potential closer to zero and beyond, which is necessary for the generation of an action potential.

Depolarization Occurs When the Neuron Becomes