Axons are long, slender projections of nerve cells, or neurons, that transmit electrical signals away from the cell body. They play a crucial role in communication within the nervous system, allowing messages to travel quickly between different parts of the body. Each axon can branch out and connect with multiple other neurons, forming a complex network that helps coordinate bodily functions. The surface of an axon is often covered with a protective layer called myelin, which speeds up signal transmission. This insulation is essential for efficient communication, as it allows electrical impulses to jump between gaps in the myelin sheath, enhancing the overall speed of nerve signal propagation.