In a nerve cell, as an action potential begins A) ion pumps actively transport K⁺ to the outside of the cell. B) K⁺ channels open and K⁺ leaves the cell. C) Na⁺ channels open and Na⁺ leaves the cell. D) K⁺ channels open and K⁺ enters the cell. E) Na⁺ channels open and Na⁺ enters the cell.

Question

Quizplus · Accepted Answer

During the initiation of an action potential, sodium (Na+) channels open, allowing Na+ ions to enter the cell. This influx of Na+ causes the inside of the cell to become more positively charged, leading to depolarization.

In a Nerve Cell, as an Action Potential Begins