A. trausversa colli 



Ramus ascendens 

 Eainiis dc'scendeiis 1 



Arteries of the Ann. 



Ligamentiim transversum scapulae superius 



, A. trausversa scapulae 



'1 



409 



Acromiou 



Ramus acromialis 



M. deltoideus 



M. infraspinatus 



31. teres minor 



I A. circumflexa humeri posterior | 



' M. triceps (caput longum) 



M. teres major 



M. triceps (caput laterale) 



452. Arteries of the right shoulder blade, 



viewed from behind. 

 (The mm. supraspinatus, infraspinatus, teres minor and deltoideus have been partially removed.) 



A. brachialis (brachial artery) (see Figs. 451, 453, 455 and 456) extends from the 

 inferior margin of the m. pectoralis major onward, at first just behind the m. coracobrachialis, 

 in front of the caput longum and caput mediale of the m. triceps, then in the sulcus bicipitalis 

 medialis almost straight downward; it then passes upon the m. brachialis, covered by the 

 lacertus fibrosus, to the depth of the elbow, there to divide at the level of the proc. coronoideus 

 ulnae into the a. radiulis and the a. ulnaris. Superficial to it medianward and in front of it 

 run the vv. brachiales; on its lateral anterior surface above descends the n. medianus, which, 

 however, above the elbow passes in front of the artery to its medial side; on its medial, 

 ]>osterior surface above, lie the n. ulnaris and radialis; these, however, soon diverge from it. 

 Besides several small branches to the neighboring muscles and skin, it gives off the following : 



1. A. profunda brachii (0. T. superior profunda artery) (see Figs. 453 and 454), 

 arises from the upper portion of the vessel, bends backward and downward and follows a spiral 

 course along with the n. radialis in the sulcus n. radialis aroun<l the posterior surface of the 

 humerus downward and lateralward: in its course it runs between the origins of the caput 

 laterale and mediale m. tricipitis and is covered by the former. Branches: 



