The difference between myelinated and unmyelinated axons is that
A) Schwann cells wrap around myelinated axons in concentric layers.
B) Schwann cells form more widely spaced nodes of Ranvier in unmyelinated axons.
C) Schwann cells simultaneously surround multiple axons in myelinated axons.
D) Schwann cells are not associated with unmyelinated axons.

Question

Quizplus · Accepted Answer

Myelinated axons have Schwann cells wrapped around them in concentric layers, forming a myelin sheath, which speeds up nerve impulse conduction. Unmyelinated axons are also associated with Schwann cells, but these cells do not wrap around the axons in layers.

The Difference Between Myelinated and Unmyelinated Axons Is That