The depolarization phase of an action potential requires A) opening of K⁺channels in the membrane. B) opening of Na⁺channels in the membrane. C) a K⁺concentration gradient across the membrane. D) a Na⁺concentration gradient across the membrane. E) both B and D

Question

Quizplus · Accepted Answer

The depolarization phase of an action potential requires the opening of sodium (Na+) channels in the membrane (B) and a sodium concentration gradient across the membrane (D), allowing Na+ to flow into the cell, causing depolarization.

The Depolarization Phase of an Action Potential Requires