Nerves are specialized structures in the body that transmit signals between the brain and various parts of the body. They play a crucial role in the nervous system, allowing for communication that controls movements, sensations, and reflexes. Nerves are made up of bundles of axons, which are long, slender projections of nerve cells, or neurons. There are two main types of nerves: sensory nerves, which carry information from sensory receptors to the brain, and motor nerves, which transmit signals from the brain to muscles. Proper functioning of nerves is essential for maintaining bodily functions and responding to the environment.