Brachial Plexus

The brachial plexus is a network of nerves located in the neck that is responsible for controlling movement and sensation in the shoulder, arm, and hand. It is formed by the spinal nerves that exit the spine and come together to form trunks, divisions, and cords, which then branch out to innervate various muscles and skin areas. Injuries to the brachial plexus can result from trauma, such as a fall or car accident, leading to weakness, pain, or loss of function in the affected arm. Understanding its function helps in diagnosing and treating related injuries and conditions.