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] {{neuroscience-stub}} {{Brachial plexus}}