Nervous System and Nerve Diseases

Nervous System

Nervous System comprises of Central Nervous System and Peripheral Nervous System. Nervous System consists of two types of cells namely neurons and glial cells. Neurons communicate with other cells through synapses which allow transmission of signals either electrical or chemical signals. Neurons possesses axons, a protoplasmic bulge that can stretch out to distant parts of the body and make a huge number of synaptic contacts. Axons much of the time go through the body in groups called nerves.Glial cells are non- neuronal cells, that offer support and nourishment, retain homeostasis, form myelin and involve in the signal transmission in the nervous system. 

The Nervous System has three overlapping functions such as sensory input, intergration and motor output. At a more integrative level, the fundamental function of Nervous system is to control and communicate information all through the body