During Repolarization of a Neuron

Question

During repolarization of a neuron
A) sodium ions move out of the cell.
B) potassium ions move out of the cell.
C) potassium ions move into the cell.
D) both sodium and potassium ions move into the cell.
E) sodium ions move into the cell.

Accepted Answer

During repolarization, potassium ions move out of the cell, leading to a decrease in the positive charge within the cell and a return to the resting membrane potential. Sodium ions move out of the cell during the initial phase of repolarization.