Action Potentials are Propagated Along A(n)____

Question

Action potentials are propagated along a(n)____.  
A) sodium channel
B) axon in two directions
C) gated channel
D) axon in one direction
E) dendrite

Accepted Answer

Action potentials are propagated along the axon in one direction, from the cell body to the axon terminal. This is due to the refractory period that occurs after an action potential, during which the membrane potential cannot be depolarized again until the sodium channels have reset.