Posterior cord
3142434
215365237
2008-05-27T21:39:08Z
24.1.111.137
{{Infobox Nerve |
Name = {{PAGENAME}} |
Latin = fasciculus posterior plexus brachialis |
GraySubject = 210 |
GrayPage = 933 |
Image = Brachial plexus.JPG |
Caption = Plan of [[brachial plexus]]. (Posterior cord is shaded gray.) |
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 = none |
BranchFrom = [[brachial plexus]] - posterior divisions of the three trunks |
BranchTo = [[upper subscapular nerve|subscapular, up.]] and [[lower subscapular nerve|low.]]<BR>[[thoracodorsal nerve|thoracodorsal]]<BR>[[axillary nerve|axillary]]<BR>[[radial nerve|radial]] |
MeshName = |
MeshNumber = |
DorlandsPre = f_03 |
DorlandsSuf = 12356221 |
}}
The '''posterior cord''' is a division of the [[brachial plexus]]. It consists of contributions from all of the roots of the brachial plexus.<ref>Drake, Richard, et al. ''Gray's Anatomy For Students'', Elsevier, 2005. pg. 657</ref>
The posterior cord gives rise to the following nerves:<ref>{{MedicalMnemonics|465|||}}</ref>
{| class="wikitable"
| '''Name''' || '''Roots''' || '''Supplies'''
|-
| [[upper subscapular nerve]] || C5-C6 || [[subscapularis]] muscle of the [[rotator cuff]]
|-
| [[lower subscapular nerve]] || C5-C6|| [[teres major]]
|-
| [[thoracodorsal nerve]] || C6-C8 || [[latissimus dorsi]] muscle
|-
| [[axillary nerve]] || C5-C6 || sensation to the [[shoulder]] and motor to the [[deltoid]] muscle and the [[teres minor]] muscle
|-
| [[radial nerve]] || C5-C8, T1|| [[triceps brachii]] muscle, the [[brachioradialis]] muscle, the extensor muscles of the fingers and wrist ([[extensor carpi radialis]] muscle), supinator, and the extensor and abductor muscles of the thumb
|}
==References==
<references/>
MBBS resources
http://mbbsbasic.googlepages.com/
==External links==
* {{UMichAtlas|hand_plexus}} - "Axilla, dissection, anterior view"
* [http://www.preventdisease.com/home/muscleatlas/113.html Illustration at preventdisease.com]
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{{Brachial plexus}}