Tags: Disease.
The brachial plexus is a network of nerves that conducts signals from the spinal cord which is housed in the spinal canal of the vertebral column (or spine) to the shoulder arm and hand. These nerves originate in the fifth sixth seventh and eighth cervical (C5-C8) and first thoracic (T1) spinal nerves and innervate the muscles and skin of the chest shoulder arm and hand.