Depolarization of the plasma membrane occurs when there is a rapid influx (inflow) of

A) potassium ions.
B) chloride ions.
C) calcium ions.
D) sodium ions.
E) amino acids.

Depolarization

A reversal in the electrical potential across a cell's plasma membrane, leading to the initiation of an action potential or nerve impulse.

Sodium Ions

Positively charged atoms of sodium, crucial for maintaining fluid balance and transmitting nerve impulses in the body.

Potassium Ions

Electrolytes with a positive charge found inside and outside of cells, essential for maintaining normal cell function including nerve impulse transmission and muscle contraction.