Cervical spinal nerves are a set of eight pairs of nerves that emerge from the cervical region of the spinal cord, which is located in the neck. These nerves are responsible for transmitting signals between the brain and various parts of the upper body, including the arms, shoulders, and neck. Each cervical nerve is numbered according to its position, with C1 being the first and C8 the last. These nerves play a crucial role in motor control and sensory perception. For example, they help control movements of the arms and hands while also relaying sensations like touch and pain from the skin back to the brain. Proper functioning of the cervical spinal nerves is essential for daily activities and overall mobility.