The Fastest Possible Conduction Velocity of Action Potentials is Observed

Question

The fastest possible conduction velocity of action potentials is observed in
A)thin, non-myelinated neurons.
B)thin, myelinated neurons.
C)thick, non-myelinated neurons.
D)thick, myelinated neurons.

Accepted Answer

Thick, myelinated neurons have the fastest conduction velocity of action potentials. Myelin acts as an insulating layer around the axon, which allows for saltatory conduction, where the action potential jumps from one node of Ranvier to the next. This speeds up the transmission of the signal, resulting in faster conduction velocity.