It’s divided into 31 segments. Each segment has many sets of nerves that exit the spinal cord: eight cervical sets, 12 thoracic, five lumbar, five sacral, and one coccygeal nerve. Damage to the ...

rib attaches to the last vertebra of the thoracic spine (i.e., T-12). The thoracic spine serves many functions. It protects the spinal cord, the bundle of nerves that extend from your brain to the ...