The central nervous system consists of the brain and spinal cord. The two types of tissues that makes up the central nervous systems are grey matter and white matter. The grey matter contains the cell bodies as well as dendrites and unmyelinated axons. This gray matter is the processing region of the brain. It also consists of regions in the brain that deal with motor control and sensory perception. These regions affect the senses such as seeing and hearing, as well as self-control, memory, emotions and decision making. White matter is composed of myelinated axons, and their job is to transmit signals between neurons and connect the gray matter areas to each other. Gray matter is typically found near the surface areas of the brain whereas white matter is found in the brain cortex’s inner layer.
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