If you were to observe a sample of brain tissue that was mostly composed of myelin and contained relatively few cell bodies, you would refer to this type of brain tissue as:
A) white matter
B) gray matter
C) cell body mass extract
D) pruned excess

Question

Quizplus · Accepted Answer

Gray matter differs from white matter in that white matter is comprised mostly of fatty myelin that surrounds axons whereas gray matter has little white myelin and instead is mostly cell bodies. "Cell body mass extract" and "pruned excess" are meaningless terms that are not mentioned in the text, but that do vaguely refer to neural concepts and may seem like correct answers to students who do not know the basic definitions of gray and white matter.

If You Were to Observe a Sample of Brain Tissue