Nonmyelinated axons
A) are thicker than myelinated axons.
B) are not associated with any Schwann cells.
C) conduct impulses more slowly than myelinated axons.
D) occur in the PNS, but not in the CNS.

Question

Quizplus · Accepted Answer

Nonmyelinated axons conduct impulses more slowly than myelinated axons because they lack the insulation provided by the myelin sheath, which allows for saltatory conduction. They are also associated with Schwann cells, but each Schwann cell can only cover a portion of the axon rather than the entire length, as in myelinated axons. Nonmyelinated axons occur in both the PNS and CNS, but are more common in the PNS. They are typically thinner than myelinated axons.

Nonmyelinated Axons