The nervous system is made up of the brain, spinal cord, and nerves. These parts work together to allow your child to think, learn, speak, and feel emotions. They also help to control basic body functions such as movement, sensation, breathing, and heartbeat. The brain and spinal cord make up the central nervous system. The nerves outside the brain and spinal cord make up the peripheral nervous system. Following is more information about the main parts of the nervous system.