During the rising phase of the action potential, A) P_K+ is much greater than P_Na+. B) P_Na+. is much greater than P_K+. C) P_K+ is the same as P_Na+ D) Na⁺ efflux occurs. E) two of these answers.

Question

Quizplus · Accepted Answer

During the rising phase of the action potential, the influx of Na+ ions into the cell is much greater than the efflux of K+ ions out of the cell, resulting in a net positive charge inside the cell and the depolarization of the membrane potential. Therefore, P_Na+. is much greater than P_K+.

During the Rising Phase of the Action Potential