The thoracic spine is made up of 12 vertebrae—called T1 to T12—accompanied by 12 vertebral discs, and 12 pairs of spinal nerve roots also servicing the arms and hands as well as the chest ...

The brain and spinal cord are your body’s central nervous system. The brain is the command center for your body, and the spinal cord is the pathway for messages sent by the brain to the body and from ...