GENERAL HISTOLOGY

Detailed explanation-1: -Unlike the structure of the spinal cord, the grey matter in the brain is present in the outermost layer. The grey matter surrounding the cerebrum is known as the cortex of the brain. There are two major cortexes in the brain, the cerebral cortex and the cerebellar cortex.

Detailed explanation-2: -The white matter is found in the inner layer of the cortex, the optic nerves, the central and lower areas of the brain or brainstem, and surrounding the central shaft of gray matter in the spinal cord.

Detailed explanation-3: -Overview. The tissue called “gray matter” in the brain and spinal cord is also known as substantia grisea, and is made up of cell bodies. “White matter", or substantia alba, is composed of nerve fibers.