When a neuron depolarizes and begins an action potential, sodium ions move into the axon and then potassium ions move out of the axon.

Question

Quizplus · Accepted Answer

This is correct. During depolarization, sodium ions rush into the axon through sodium channels. This causes the inside of the neuron to become more positive. Then, during repolarization, potassium ions move out of the axon through potassium channels, which causes the inside of the neuron to become more negative again.

When a Neuron Depolarizes and Begins an Action Potential, Sodium