Median nerve

The median nerve is a nerve in humans and other animals in the upper limb. It is one of the five main nerves originating from the brachial plexus.Brachium seen anterolaterally, showing nerves and vasculatureAntebrachium seen anteriorly, showing nerves and vasculatureCross-section through the middle of upper arm (left), and middle of the forearm (right)Transverse section across distal ends of radius and ulnaTransverse section across the wrist and digitsThe right brachial plexus (infraclavicular portion) in the axillary fossa, viewed from below and in frontDiagram of segmental distribution of the cutaneous nerves of the right upper extremity.Superficial palmar nervesDeep palmar nervesFront of right upper extremity, showing surface markings for bones, arteries, and nervesMedian nerveMedian nerve The median nerve is a nerve in humans and other animals in the upper limb. It is one of the five main nerves originating from the brachial plexus. The median nerve originates from the lateral and medial cords of the brachial plexus, and has contributions from ventral roots of C5-C7 (lateral cord) and C8 and T1 (medial cord). The median nerve is the only nerve that passes through the carpal tunnel. Carpal tunnel syndrome is the disability that results from the median nerve being pressed in the carpal tunnel.