GROSS ANATOMY

Detailed explanation-1: -Deep median fissure divides the cerebrum into two equal cerebral hemispheres. The thin layers of cells cover the cerebral hemispheres called cerebral cortex. The elevated ridges of tissue on the surface of the cerebral cortex are known as gyri while the shallow grooves are termed sulci.

Detailed explanation-2: -A gyrus (plural: gyri) is the name given to the bumps ridges on the cerebral cortex (the outermost layer of the brain). Gyri are found on the surface of the cerebral cortex and are made up of grey matter, consisting of nerve cell bodies and dendrites.

Detailed explanation-3: -The cerebral cortex has sulci (small grooves), fissures (larger grooves) and bulges between the grooves called gyri.

Detailed explanation-4: -Brain gyri and sulci serve two very important functions: They increase the surface area of the cerebral cortex and they form brain divisions. Increasing the surface area of the brain allows more neurons to be packed into the cortex so that it can process more information.

Detailed explanation-5: -[3] The gyri and sulci, or ridges and grooves located in the brain, are present to increase surface area. This increased surface area is crucial for effective functioning as more neurons can be present in contrast to a brain with a flat surface.