Question

the fastest impulse conduction would occur in what type of axon?
multiple choice
small - diameter unmyelinated axon
small - diameter myelinated axon
large - diameter unmyelinated axon
large - diameter myelinated axon

Explanation:

Myelination increases impulse conduction speed as it allows saltatory conduction (jumping of impulses between nodes of Ranvier). Larger - diameter axons have less resistance to the flow of ions, which also speeds up impulse conduction. So, a combination of large diameter and myelination would result in the fastest impulse conduction.

Answer:

Large - diameter myelinated axon