Medial cord
3142436
162668815
2007-10-06T14:45:05Z
Mikael Häggström
2615838
specified
{{Infobox Nerve |
Name = {{PAGENAME}} |
Latin = fasciculus medialis plexus brachialis |
GraySubject = 210 |
GrayPage = 933 |
Image = Gray807.png |
Caption = Plan of [[brachial plexus]]. (Medial cord is at bottom left.) |
Image2 = Gray808.png |
Caption2 = 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. |
Innervates = |
BranchFrom = [[brachial plexus]] - lower trunk |
BranchTo = [[median pectoral nerve|median pectoral]]<BR>[[medial brachial cutaneous nerve|medial brachial cutaneous]]<BR>[[medial antebrachial cutaneous nerve|medial antebrachial cutaneous]]<BR>[[median nerve|median]]<BR>[[ulnar nerve|ulnar]] |
MeshName = |
MeshNumber = |
DorlandsPre = f_03 |
DorlandsSuf = 12356128 |
MeshName = |
MeshNumber = |
DorlandsPre = f_03 |
DorlandsSuf = 12356128 |
}}
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 muscle]]s 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}}
* {{UMichAtlas|hand_plexus}}
{{Brachial plexus}}
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