CII Certificate In Insurance - Packaged Commercial Insurances (IF8) Practice Test

Which ion movement is most responsible for repolarization after the peak of a typical action potential?

Potassium leaving the cell Sodium entering the cell Chloride leaving the cell Calcium entering the cell

Correct Answer:

Potassium leaving the cell

Explanation:

Voltage-gated potassium channels open after depolarization, allowing K+ to leave the cell and driving the membrane potential back toward resting levels.

Access more questions from this quiz

Continue to CII Certificate in Insurance - Packaged Commercial Insurances (IF8) Practice Test for more practice questions and the full quiz experience.

Access More Questions