Spinal nerves are part of the peripheral nervous system and emerge from the spinal cord. There are 31 pairs of spinal nerves, each consisting of sensory and motor fibers. These nerves are responsible for transmitting signals between the body and the central nervous system, allowing for movement and sensation. Each spinal nerve is connected to a specific segment of the body, corresponding to different regions of the spine. They are categorized into five regions: cervical, thoracic, lumbar, sacral, and coccygeal. Proper functioning of spinal nerves is essential for everyday activities and overall health.