Nervous System
The nervous system is
made up of the brain, the spinal cord, and nerves. One of the most important
systems in your body, the nervous system is your body's control system. It
sends, receives, and processes nerve impulses throughout the body. These nerve
impulses tell your muscles and organs what to do and how to respond to the
environment. There are three parts of your nervous system that work together: the
central nervous system, the peripheral nervous system, and the autonomic
nervous system.
- The central nervous
system consists of the brain and spinal cord. It sends out nerve
impulses and analyses information from the sense organs, which tell your
brain about things you see, hear, smell, taste and feel.
- The peripheral nervous
system includes the craniospinal nerves that branch off from the
brain and the spinal cord. It carries the nerve impulses from the central
nervous system to the muscles and glands.
- The autonomic nervous
system regulates involuntary action, such as heart beat and
digestion.