Which of the Following Does Not Influence the Time Necessary

Question

Which of the following does not influence the time necessary for a nerve impulse to be transmitted?
A) length of the axon
B) presence or absence of a myelin sheath
C) diameter of the axon
D) presence or absence of nodes
E) whether or not the impulse begins in the CNS

Accepted Answer

Whether or not the impulse begins in the CNS does not influence the time necessary for a nerve impulse to be transmitted. The other factors listed (axon length, myelin sheath presence, axon diameter, and presence/absence of nodes) can all affect the speed of nerve transmission.