4. Spinal Nerves Origin
Thirty-one pairs of spinal nerves – attached to spinal cord Include 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal pairs of nerves Each spinal nerve– attached to spinal cord by 2 roots: Ventral and dorsal nerve roots Ventral or anterior motor root carries motor or efferent fibers from spinal cord