What causes the rapid depolarization phase of a contractile cell action potential?
A)sodium movement into the cell
B)calcium movement out of the cell
C)calcium movement into the cell
D)sodium movement out of the cell
E)potassium movement into the cell

Question

Quizplus · Accepted Answer

The rapid depolarization phase of a contractile cell action potential is primarily caused by the influx of sodium ions into the cell.

What Causes the Rapid Depolarization Phase of a Contractile Cell