An action potential would travel fastest in:

An action potential would travel fastest in:
A . unmyelinated, thick axon
B . myelinated, thick axon
C . unmyelinated, thin axon
D . myelinated thin axon

View Answer

Answer: B

Explanation:

Axons are thin or thick bundles of nerve fibers. The thicker an axon is, the more quickly an action potential will travel through it. Additionally, a myelin sheath functions as an insulator that also facilitates the rapid transmission of an action potential.