The figure illustrates changes in the membrane potential during an action potential. What does "A" represent?
A) Repolarization
B) Depolarization
C) Local potential
D) Threshold
E) Afterpotential

Membrane Potential

The electrical potential difference across a cell's plasma membrane, critical for the conduction of impulses in neurons and muscle cells.

Depolarization

The process in which the electrical charge of a cell membrane becomes less negative, often leading to the initiation of an action potential.

Repolarization

The process of restoring the negative charge inside the membrane of a neuron or muscle cell after depolarization.