What is the Function and Parts of the Nervous System?
The nervous system is the body's information gatherer, storage center and control system. Its overall function is to collect information about the external conditions in relation to the body's external state, to analyze this information, and to initiate appropriate responses to satisfy certain needs. The most powerful of these needs is survival. The nerves do not form one single system, but several which are interrelated. Some of these are physically separate, others are different in function only. The brain and spinal cord make up the central nervous system. The peripheral nervous system is responsible for the body functions which are not under conscious control - like the heartbeat or the digestive system