Identify the phases of an action potential. (Check all that apply.)

A) Afterpotential
B) Depolarization
C) Hyperpolarization
D) Repolarization

Action Potential

A rapid rise and subsequent fall in voltage or electrical charge across a cellular membrane, the basis for neural communication and muscle contraction.

Afterpotential

Afterpotential is the transient electrical polarization that follows the action potential in nerve cells or muscle fibers, impacting the cell's excitability.

Depolarization

A decrease in the difference in electrical charge across a cell's plasma membrane, making the inside of the cell less negative compared to the outside.