A nerve impulse travels fastest along ________ axons of ______ diameter.
A)myelinated; small
B)unmyelinated; small
C)myelinated; large
D)unmyelinated; large
E)None of the choices; axon diameter does not affect impulse conduction.

Question

Quizplus · Accepted Answer

Myelination increases the speed of nerve impulse conduction. Larger diameter axons have less resistance to the flow of ions and create less leakage of ions out of the axon, both of which also increase conduction speed. Therefore, nerve impulses travel fastest along myelinated axons of large diameter.

A Nerve Impulse Travels Fastest Along ________ Axons of ______

A Nerve Impulse Travels Fastest Along __ Axons of