The fastest possible conduction velocity of action potentials is observed in
A) thin, non-myelinated neurons.
B) thin, myelinated neurons.
C) thick, non-myelinated neurons.
D) thick, myelinated neurons.

Question

Quizplus · Accepted Answer

Myelination allows for saltatory conduction, where the action potential jumps from one node of Ranvier to the next, increasing the speed of conduction. Thicker axons also have a faster conduction velocity due to a lower resistance to ion flow. Therefore, thick, myelinated neurons have the fastest possible conduction velocity of action potentials.

The Fastest Possible Conduction Velocity of Action Potentials Is Observed