Medial cord

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Nerve: Medial cord
Plan of brachial plexus. (Medial cord is at bottom left.)
The right brachial plexus with its short branches, viewed from in front. The Sternomastoid and Trapezius muscles have been completely, the Omohyoid and Subclavius have been partially, removed; a piece has been sawed out of the clavicle; the Pectoralis muscles have been incised and reflected.
Latin	fasciculus medialis plexus brachialis
Gray's	subject #210 933
From	brachial plexus - lower trunk
To	median pectoral medial brachial cutaneous medial antebrachial cutaneous median ulnar
Dorlands / Elsevier	f_03/12356128

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The Medial cord is a division of the brachial plexus.

The medial cord gives rise to the following nerves:

• The median pectoral nerve, C8 and T1, to the pectoralis muscle
• The medial brachial cutaneous nerve, T1
• The medial antebrachial cutaneous nerve, C8 and T1
• The median nerve, partly. The other part comes from the lateral cord. C7, C8 and T1 nerve roots. The first branch of the median nerve is to the pronator teres muscle, then the flexor carpi radialis, the palmaris longus and the flexor digitorum superficialis. The median nerve provides sensation to the anterior palm, the anterior thumb, index finger and middle finger. It is the nerve compressed in carpal tunnel syndrome.
• The ulnar nerve originates in nerve roots C7, C8 and T1. It provides sensation to the ring and pinky fingers. It innervates the flexor carpi ulnaris muscle, the flexor digitorum profundus muscle to the ring and pinky fingers, and the intrinsic muscles of the hand (the interosseous muscle, the lumbrical muscles and the flexor pollicus brevis muscle). This nerve traverses a groove on the elbow called the cubital tunnel, also known as the funny bone. Striking the nerve at this point produces an unpleasant sensation in the ring and little fingers.

External links

• EatonHand ner-125
• Atlas of anatomy at UMich hand_plexus

v • d • e Nerves of upper limbs (primarily): the brachial plexus (C5-T1)
Supraclavicular	root (dorsal scapular, long thoracic) - upper trunk (suprascapular, to the subclavius)
Infraclavicular: lateral cord	lateral pectoral musculocutaneous (lateral cutaneous of forearm) median/lateral root: anterior interosseous - palmar - recurrent - common palmar digital (proper palmar digital)
Infraclavicular: medial cord	medial pectoral cutaneous: medial cutaneous of forearm • medial cutaneous of arm ulnar: muscular - palmar - dorsal (dorsal digital nerves) - superficial (common palmar digital, proper palmar digital) - deep median/medial root: see above
Infraclavicular: posterior cord	subscapular (upper, lower) • thoracodorsal axillary (superior lateral cutaneous of arm) radial: muscular - cutaneous (posterior of arm, inferior lateral of arm, posterior of forearm) - superficial (dorsal digital nerves) - deep (posterior interosseous)
Other	cutaneous innervation of the upper limbs

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