Action Potentials are Able to Travel Over Long Distances Without

Question

Action potentials are able to travel over long distances without decaying because
A)the axons are perfectly insulated,so no current is able to leak out.
B)the action potential uses completely different ions than graded potentials.
C)once the electrical signal has passed threshold,it is impossible for the signal to decay.
D)one action potential generates the next one in an adjacent area of membrane.

Accepted Answer

Action potentials are able to travel over long distances because one action potential generates the next one in an adjacent area of membrane. This is due to the depolarization of the membrane leading to the opening of voltage-gated ion channels in the adjacent area, allowing the action potential to propagate along the axon without decay.