MICROANATOMY

Detailed explanation-1: -The brachial plexus is a major network of nerves transmitting signals responsible for motor and sensory innervation of the upper extremities, including the shoulder, arm, and hand. It originates from the ventral rami of C5 through T1 spinal nerves.

Detailed explanation-2: -The upper limb is supplied by a nervous network called the brachial plexus. This plexus is made by the merging of the anterior rami from the lower four cervical nerves and the first thoracic nerve (C5-T1). The plexus is anatomically divided into roots, trunks, divisions, cords and finally, the terminal branches.