Question

Which of the following will affect axonal conduction velocity?

1) the diameter of the axon
2) the amount of myelination
3) both the diameter of the axon and the amount of myelination
4) neither the diameter of the axon nor the amount of myelination

Answer 1

Both the diameter of the axon and the amount of myelination affect axonal conduction velocity.

Step-by-step explanation:

Both the diameter of the axon and the amount of myelination will affect axonal conduction velocity. A wider diameter of the axon allows for faster conduction as there is less resistance. Additionally, myelination increases the speed of conduction by enabling saltatory conduction, where the action potential jumps from one node of Ranvier to the next. These factors play a role in determining the speed at which a nerve signal can travel.