Action potentials
A) are initiated by the membrane's increased permeability to potassium.
B) return to resting when the sodium channels open.
C) can be triggered in very rapid succession, with no delay.
D) involve voltage-gated channels in the membrane.
E) are propagated only because chloride ions move through the membrane.

Question

Quizplus · Accepted Answer

Action potentials involve the opening and closing of voltage-gated channels in the membrane, allowing ions such as sodium and potassium to flow in and out of the cell.

Action Potentials