The nervous system is a very complex system in the body. It has many, many parts. The nervous system is divided into two main systems, the central nervous system (CNS) and the peripheral nervous system. The spinal cord and the brain make up the CNS.

Its main job is to get the information from the body and send out instructions.
The peripheral nervous system is made up of all of the nerves and the wiring. This system sends the messages from the brain to the rest of the body.

..Central Nervous System
..Peripheral Nervous System
..Endocrine System
..Brain