A nerve is a cell in the body that transmits information through signals. They are linked together in chains. They are located mostly in the spinal cord and the brain. Nerves transmit information like highways through signals to help your body function. For example if you want to talk, the brain will send signals through nerves to the vocal muscles and the vocal cords. They also help you sense pain. When you get pricked by a rose thorn for example, the nerves under your skin will send a message to your brain to feel pain! There are so many links between nerves because nerves help you with everything you do, from thinking to walking!