Action potentials are usually propagated in only one direction along an axon because... A) the refractory period prevents the immediate re-opening of voltage-gated Na+ channels. B) both the voltage-gated Na+ channels and K+ channels open only in one direct

Last updated: 7/26/2022

Action potentials are usually propagated in only one direction along an axon because... A) the refractory period prevents the immediate re-opening of voltage-gated Na+ channels. B) both the voltage-gated Na+ channels and K+ channels open only in one direction. C) ions can flow along the axon only in one direction. D) the axon hillock has a larger resting potential than the cell body. E) the nodes of Ranvier conduct in only one direction.