THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -In total, there are 31 pairs of spinal nerves grouped regionally by spinal region. More specifically, there are eight cervical nerve pairs (C1-C8), twelve thoracic nerve pairs (T1-T12), five lumbar nerve pairs (L1-L5), 5 sacral (S1-S5), and a single coccygeal nerve pair.

Detailed explanation-2: -There are 31 pairs in humans: eight cervical, twelve thoracic, five lumbar, five sacral, and one coccygeal. Each pair links the spinal cord to a different part of the body. Complete answer: 12 pairs of cranial nerves arise from the brain.

Detailed explanation-3: -These nerves are integral to the PNS because they control motor, sensory, and autonomic functions between the spinal cord and the body. There are 31 pairs of spinal nerves located at the cervical, thoracic, lumbar, sacral, and coccygeal levels: 8 pairs of cervical nerves (C1-C8).

Detailed explanation-4: -There are 31 pairs of spinal nerves (8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal). Because there are only seven cervical vertebrae, the first seven cervical nerves exit above the same numbered cervical vertebrae.