646 



THE VASCULAR SYSTEMS 



Superior pro/undo. 



Inferior profunda. 



around the back of the humerus between the Triceps and the bone, forming an arch 

 above the olecranon fossa by its junction with the posterior articular branch of 

 the superior profunda. As this vessel lies on the Brachialis anticus, branches 

 ascend to join the inferior profunda, and others descend in front of the inner 

 condyle to anastomose with the anterior ulnar recurrent. Behind the internal 

 condyle an offset is given off which anastomoses with the inferior profunda and 

 posterior ulnar recurrent arteries and supplies the Triceps. 



The muscular (rami musculares) are three or four large branches, which are 

 distributed to the muscles in the course of the artery. They supply the Coraco- 

 brachialis, Biceps, and Brachialis anticus muscles. 



The Anastomosis around the Elbow-joint (Fig. 463). The vessels engaged 

 in this anastomosis may be conveniently divided into those situated in front and 



behind the internal and external 

 condyles. The branches anasto- 

 mosing in front of the internal 

 condyle are the anastomotica 

 magna, the anterior ulnar recur- 

 rent, and the anterior terminal 

 branch of the inferior profunda. 

 Those behind the internal condyle 

 are the anastomotica magna, the 

 posterior ulnar recurrent, and the 

 posterior terminal branch of the 

 inferior profunda. The branches 

 anastomosing in front of the ex- 

 ternal condyle are the radial re- 

 current and the anterior terminal 

 branch of the superior profunda. 

 Those behind the external condyle 

 (perhaps more properly described 

 as being situated between the ex- 

 ternal condyle and the olecranon) 

 are the anastomotica magna, the 

 interosseous recurrent, and the 

 posterior terminal branch of the 

 superior profunda. There is also 

 a large arch of anastomosis above 

 the olecranon, formed by the in- 

 terosseous recurrent, joining with 

 the anastomotica magna and 

 posterior ulnar recurrent. 



From this description it will be 

 observed that the anastomotica 



magna is the vessel most engaged, the only part of the anastomosis in which it is 

 not employed being that in front of the external condyle. 



Anterior branch of 

 superior profunda. 



Posterior branch of 

 superior profunda. 



Radial recur.-ent. 



Interosseous 

 recurrent. 



Anastomotica 

 magna. 



Anterior ulnar 

 recurrent. 



Posterior ulnar 

 recurrent. 



Interosseous. 

 Posterior 

 interosseous. 



Anterior 



interosseous. 



FIG. 463. Diagram of the anastomosis around the right 

 elbow-joint. 



The Radial Artery (A. Radialis) (Figs. 462, 464). 



The radial artery appears, from its direction, to be the continuation of the 

 brachial, but in size it is smaller than the ulnar. It commences at the bifurcation 

 of the brachial, just below the bend of the elbow, and passes along the radial side of 

 the forearm to the wrist; it then winds backward, around the outer side of the 

 carpus, beneath the Extensor tendons of the thumb, to the upper end of the 



