Action potentials
A) are propagated more rapidly in unmyelinated axons.
B) jump between nodes of Ranvier.
C) occur in an all-or-none fashion.
D) do all of these.
E) jump between nodes of Ranvier and occur in an all-or-none fashion only.

Question

Quizplus · Accepted Answer

Action potentials jump between nodes of Ranvier in myelinated axons, speeding up signal transmission, and they occur in an all-or-none fashion, meaning once the threshold is reached, the action potential is always the same size. They are not propagated more rapidly in unmyelinated axons; myelination increases conduction speed.

Action Potentials