Nerves are vital, cable-like bundles of fibers (axons) from nerve cells (neurons) that transmit electrochemical signals, acting as the body’s communication network between the brain, spinal cord, and the rest of the body, enabling sensation, movement, and controlling involuntary functions like breathing and digestion. They form the peripheral nervous system (PNS) and are classified as sensory (to CNS), motor (from CNS), or interneurons, allowing for rapid communication essential for all bodily functions.
