The Difference Between Myelinated and Unmyelinated Axons Is That

Multiple Choice

The difference between myelinated and unmyelinated axons is that

A) Schwann cells are not associated with unmyelinated axons.
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 wrap around myelinated axons in concentric layers.