Spinal nerves

The spinal nerves are in all 31 pairs; of these, 8 arise from the cervical sector of the spinal cord (cervical spinal nerves), 12 arise from the thoracic sector of the spinal cord (thoracic spinal nerves), 5 arise from the lumbar sector of the spinal cord (lumbar spinal nerves), 5 arise from the sacral sector spinal cord (sacral spinal nerves) and one arises from the coccygeal sector of the spinal cord (coccygeal spinal nerves).