Myelin on axons functions to
A) make the axons live longer.
B) store nutrients (fat) for use by the neurons.
C) cover nodes of Ranvier.
D) speed the rate of impulse conduction and insulate neighboring axons from one another.

Question

Quizplus · Accepted Answer

Myelin functions to speed up the rate of impulse conduction along an axon by allowing the action potential to "jump" from one node of Ranvier to the next, rather than traveling the entire length of the axon. This allows for faster transmission of signals. Myelin also functions to insulate neighboring axons from one another, preventing cross-talk and interference between signals. It does not directly impact the lifespan of axons or store nutrients.

Myelin on Axons Functions to