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. The central nervous system is made up of the brain and the spinal cord. The peripheral nervous system is made up of all the nerves throughout the rest of the body.

Brain	The brain is the command center. It controls your senses, thoughts, and actions. The brain helps your body process and respond to information.
Spinal cord	The brain is the command center. It controls your senses, thoughts, and actions. The brain helps your body process and respond to information.
Peripheral nervous system	The peripheral (per IF er uhl) nervous system includes the nerves that branch off from the brain and the spinal cord. These nerves carry nerve impulses from the central nervous system to the other parts of the body and from the body back to the central nervous system.