Neuroscientists often categorize parts of the brain into grey matter and white matter.What makes the white matter regions appear white?
A)It contains only dendrites.
B)It is composed of myelinated axons.
C)It contains a high level of connective tissue.
D)It contains only cell bodies.

Question

Quizplus · Accepted Answer

White matter is composed of myelinated axons, which are covered in a fatty substance called myelin. This gives them a lighter, white appearance compared to the grey matter, which is mostly composed of cell bodies and dendrites.

Neuroscientists Often Categorize Parts of the Brain into Grey Matter