The conduction speed of neurons is largely a function of:
A)Axon length and axon diameter
B)Axon diameter and number of ion channels
C)Axon diameter and myelination
D)Axon length and myelination

Question

Quizplus · Accepted Answer

The conduction speed of neurons is largely determined by the axon diameter and myelination. Larger axon diameters enable faster signal propagation due to less resistance to ion flow. Myelination, which occurs when specialized cells called "glia" insulate the axon with a fatty coating, generates a "saltatory" effect where ions rapidly jump from one insulated region (or "node") to another, bypassing the uninsulated regions in between. This significantly increases conduction velocity.

The Conduction Speed of Neurons Is Largely a Function Of