Nodes of Ranvier are found only on

A) myelinated axons.
B) dendrites.
C) astrocytes.
D) Nissl bodies.
E) unmyelinated axons.

Nodes of Ranvier

Gaps in the myelin sheath along a nerve fiber, where the axonal membrane is exposed to the extracellular space, facilitating rapid signal transmission.

Myelinated Axons

Axons that are covered with myelin, a fatty substance that speeds up the transmission of nerve impulses.