Action potentials would be conducted most rapidly by
A)a 10 mm diameter myelinated axon.
B)a 10 mm diameter unmyelinated axon.
C)a 40 mm diameter myelinated axon.
D)a 40 mm diameter unmyelinated axon.

Question

Quizplus · Accepted Answer

Axon diameter is directly correlated with conduction velocity; larger diameters will conduct signals more quickly. Additionally, myelination also increases conduction velocity due to saltatory conduction. Therefore, a myelinated axon with a larger diameter (choice C) would conduct action potentials more rapidly than the other options.

Action Potentials Would Be Conducted Most Rapidly by