Final answer:
The gray matter of the CNS contains cell bodies and interneurons, while the white matter consists of myelinated axons.
Step-by-step explanation:
The gray matter of the CNS (Central Nervous System) contains mainly the cell bodies of neurons. It is called gray matter because it appears gray in cadavers, although it is actually more pink in living tissue. Gray matter is also composed of interneurons, which connect different neurons located in different parts of the body.
White matter, on the other hand, consists mainly of axons covered with a myelin sheath, which gives them their white color. White matter is responsible for transmitting signals between different parts of the body and makes up the nerves of the peripheral nervous system.
In summary, the gray matter of the CNS contains cell bodies of neurons and interneurons, while the white matter consists of myelinated axons responsible for transmitting signals between different parts of the body.