Teres major muscle 3042699 225015742 2008-07-11T13:51:43Z Vedran12 7322109 interwiki hr {{Muscle infobox | Name = Teres major muscle | Latin = musculus teres major | GraySubject = 123 | GrayPage = 442 | Image = Arm muscles back numbers.png | Caption = Muscles on the dorsum of the [[scapula]], and the [[Triceps brachii muscle]]: #3 is [[Latissimus dorsi muscle]]<BR>#5 is [[Teres major muscle]]<BR>#6 is [[Teres minor muscle]]<BR>#7 is [[Supraspinatus muscle]]<BR>#8 is [[Infraspinatus muscle]]<BR>#13 is long head of [[Triceps brachii muscle ]] | Image2 = Gray1211.png | Caption2 = Surface anatomy of the back. (label for Teres major at upper right.) | Origin = posterior aspect of the [[Inferior angle of the scapula|inferior angle]] of the [[scapula]] | Insertion = medial lip of the [[intertubercular sulcus]] of the [[humerus]] | Action = [[Internal rotation]] of the [[humerus]] | Blood = [[Subscapular Artery|Subscapular]] and [[circumflex scapular artery|circumflex scapular]] arteries | Nerve = [[Lower subscapular nerve]] (segmental levels C5 and C6) | MeshName = | MeshNumber = | DorlandsPre = m_22 | DorlandsSuf = 12551115 | }} '''Teres major''' is a muscle of the [[upper limb]] and one of six scapulohumeral muscles. It is a thick but somewhat flattened muscle. ==Origin and insertion== It arises from the oval area on the dorsal surface of the [[inferior angle of the scapula]], and from the fibrous septa interposed between the muscle and the [[Teres minor]] and [[Infraspinatus]] The fibers of teres major insert into the medial lip of the bicipital groove of the humerus. ==Relations== [[Image:Teres_major.PNG|thumb|left|200px|Posterior view showing the relations between teres major muscle (in red) and the other muscles connecting the upper extremity to the vertebral column.]] The tendon, at its insertion, lies behind that of the [[Latissimus dorsi]], from which it is separated by a [[Bursa_(anatomy)|bursa]], the two tendons being, however, united along their lower borders for a short distance. Together with [[teres minor muscle]], teres major muscle forms the [[axillary space]], where several important arteries and veins pass through. ==Action== The Teres major assists the [[Latissimus dorsi]] in drawing the previously raised humerus downward and backward, and in rotating it inward; when the arm is fixed it may assist the Pectorales and the Latissimus dorsi in drawing the trunk forward. ==Additional images== <gallery> Image:Gray411.png|Deep muscles of the chest and front of the arm, with the boundaries of the axilla. </gallery> ==External links== * {{MuscleLoyola|tmj}} * {{GPnotebook|711655502}} * {{SUNYAnatomyFigs|03|03|06}} * [http://www.ptcentral.com/muscles/muscletrunk.html#teres%20major PTCentral] ==See also== *[[Accessory muscles of the scapula]] {{Gray's}} {{Muscles_of_upper_limb}} [[Category:Muscles of the upper limb]] {{muscle-stub}} [[ar:عضلة مدورة كبيرة]] [[cs:Velký oblý sval]] [[de:Musculus teres major]] [[fr:Muscle grand rond]] [[id:Otot teres major]] [[he:השריר העגול הגדול]] [[hr:Veliki obli mišić]] [[hu:Nagy görgetegizom]] [[la:Musculus teres maior]] [[nl:Musculus teres major]] [[pl:Mięsień obły większy]] [[pt:Músculo redondo maior]] [[sv:Teres major]] [[sl:Velika okrogla mišica]]