Neuroscientists often categorize parts of the brain into grey matter and white matter.What makes the white matter regions appear white?

Question

Quizplus · Accepted Answer

White matter regions in the brain appear white because they are composed of myelinated axons. Myelin is a fatty substance that wraps around axons and helps to speed up the transmission of electrical signals in the brain. This fatty substance gives the axons a white appearance. Grey matter, on the other hand, contains more cell bodies and appears greyish in color.

Neuroscientists Often Categorize Parts of the Brain into Grey Matter