there are _________ pairs of cervical spinal nerves, and they supply the ________________.
Spinal Nerves Overview in the Human Body. There are 31 pairs of spinal nerves. Each containing thousands of nerve fibers. They supply all areas of the body except the head and some areas of the neck. Below is a breakdown of the number of spinal nerves in each area of the spine. 8 pairs of cervical spinal nerves C1 â C8.