What happens when the measured potential of a membrane reaches threshold?
A) Potassium rapidly enters the cell.
B) Potassium rapidly leaves the cell.
C) Sodium rapidly enters the cell.
D) Sodium rapidly leaves the cell.

Question

Quizplus · Accepted Answer

When the measured potential of a membrane reaches threshold, sodium channels open, allowing sodium to rapidly enter the cell, which is crucial for the depolarization phase of an action potential.

What Happens When the Measured Potential of a Membrane Reaches