Question

multiple choice question
when a stimulus reaches a neuron, sodium channels open, allowing sodium ions to diffuse inward. this induces ______ of the membrane.
hyperpolarization
repolarization
depolarization

Explanation:

When sodium ions diffuse inward into a neuron due to the opening of sodium - channels upon stimulus arrival, the inside of the membrane becomes less negative (more positive) relative to the outside. This change in the membrane potential is called depolarization. Hyperpolarization is when the membrane becomes more negative inside, and repolarization is the return to the resting membrane potential after depolarization.

Answer:

C. depolarization