Nerve supply of upper limbs from "summary" of Bd Chaurasia's Human Anatomy, Volume 1 by B. D. Chaurasia
The upper limbs receive their nerve supply from the brachial plexus, a complex network of nerves that originate from the ventral rami of the spinal nerves C5-T1. The brachial plexus is responsible for innervating the muscles and skin of the upper limbs, providing both motor and sensory functions. The brachial plexus is divided into roots, trunks, divisions, cords, and branches. The roots are formed by the ventral rami of C5-T1 spinal nerves, which combine to form the superior, middle, and inferior trunks. These trunks give rise to anterior and posterior divisions, which further combine to form lateral, medial, and posterior cords. From these cords, various branches emerge to supply different regions of the upper limb. The musculocutaneous nerve arises from the lateral cord and innervates the muscles in the anterior compartment of the arm. The median nerve, also originating from the la...
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