Question

Sodium moves out of an axon as it is depolarizing. a. True b. False

Answer 1

Sodium moves into an axon as it depolarizes. It does not move out of the axon.

Step-by-step explanation:

b. False. Sodium moves into an axon as it is depolarizing, not out of it. During depolarization, the axon membrane becomes more positive as sodium ions enter the cell. This influx of positive charge triggers the generation of an action potential, which allows the nerve impulse to be conducted down the axon.