NEET PG DENTAL EXAM

Detailed explanation-1: -White matter is found in the deeper tissues of the brain (subcortical). It contains nerve fibers (axons), which are extensions of nerve cells (neurons). Many of these nerve fibers are surrounded by a type of sheath or covering called myelin. Myelin gives the white matter its color.

Detailed explanation-2: -The gray matter regions of the CNS, the brain and spinal cord, contrast with the white matter regions. The gray matter is the areas where the actual “processing” is done whereas the white matter provides the communication between different gray matter areas and between the gray matter and the rest of the body.

Detailed explanation-3: -White matter is caused by the presence of myelin, a fatty covering on the axons of neurons created by specialized cells called oligodendrocytes. Gray matter lacks myelin, which gives this tissue a darker, grayish appearance.