[pairs of nerves (31 in humans) arising from the spinal cord, formed by the union of the dorsal and ventral spinal roots from each spinal cord segment. ( CSP )]
UMLS (CSP) C0037941 - Body Part, Organ, or Organ Component
Relation/PAR: nerve
peripheral nervous system
Relation/CHD: phrenic nerve
sciatic nerve
lumbar plexus