An action potential or nerve impulse is conducted along the length of an axon
A) by neurotransmitters
B) as a wave of depolarization from one segment to the next
C) by the diffusion of sodium ions
D) by successive repolarization of the membrane
E) by the action of negative ions

Question

Quizplus · Accepted Answer

An action potential is conducted along the axon as a wave of depolarization from one segment to the next. This is due to the opening of voltage-gated sodium channels at the initial segment, causing an influx of sodium ions and depolarization of the membrane. This depolarization then triggers the opening of additional voltage-gated sodium channels in the adjacent segment, leading to further depolarization and propagation of the action potential along the length of the axon.

An Action Potential or Nerve Impulse Is Conducted Along the Length