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: -Cerebral Cortex Cortex is Latin for “bark, ” and describes the outer gray matter covering of the cerebrum. The cortex has a large surface area due to its folds, and comprises about half of the brain’s weight. The cerebral cortex is divided into two halves, or hemispheres.

Detailed explanation-3: -The outer layer of the cortex is also known as the white matter due to the presence of neuronal cell bodies. The inner layer is called white matter due to the presence of myelinated axons of the above mentioned neuronal cell bodies.

Detailed explanation-4: -The cerebral hemispheres consist of a convoluted cortex of gray matter (thickness around 3 mm, total surface area 1.2-2.6 m2) overlying the central medullary mass of white matter, which conveys fibers between different parts of the cortex and from other parts of central nervous system.