When sodium ions flow into the neuron:
A)hyperpolarization occurs
B)a resting potential is established
C)the refractory period ends
D)depolarization occurs

Question

Quizplus · Accepted Answer

Sodium ions flowing into the neuron cause depolarization, which means that the membrane potential becomes less negative and brings the neuron closer to the threshold for firing an action potential. This is due to the fact that sodium ions are positively charged and make the inside of the neuron more positive.

When Sodium Ions Flow into the Neuron