Within the peripheral nervous system there are also two main sets of nerves: the autonomic nervous system and the somatic nervous system. In each case, the signals only go in one direction: The motor nerve signals travel from the brain to the muscle and the sensory nerve signals travel from the senses to the brain.
They come from our skin (touch), eyes (sight), tongue (taste), nose (smell), and ears (hear). These nerves carry signals to the brain to tell it about what is going on in the outside world. Sensory nerves - The second type of nerves are called sensory nerves.The brain sends signals over the motor nerves to tell our muscles to expand or contract so we can move. Motor nerves - Motor nerves allow the brain to control our muscles.There are two main types of nerves: motor nerves and sensory nerves. Some nerves are really long, like the ones that go all the way from your feet to your spinal cord. Inside each nerve is a bundle of nerve fibers. Nerves are sort of like wires that carry communication signals or impulses around the body.
The rest of the nerves together are called the peripheral nervous system. The brain and the spinal cord make up what is called the central nervous system.
It wouldn't know anything that was going on in the outside world and wouldn't be able to control our body. Without the nervous system our brain would be mush. Together the nervous system helps different parts of our body communicate and allows our brain to control what is going on. The nervous system is made up of the brain, the spinal cord, and a large network of nerves that covers all parts of the body.