A thick myelinated axon fiber will conduct an action potential more rapidly than will a thin unmyelinated fiber.

Question

Quizplus · Accepted Answer

Myelination insulates the axon and allows for saltatory conduction, where the impulse "jumps" from one node of Ranvier to the next, increasing the speed of the action potential. Thin unmyelinated fibers have a slower conduction velocity because the impulse has to travel through every part of the axon.

A Thick Myelinated Axon Fiber Will Conduct an Action Potential