RADIAL. 



487 



inner condyle and olecranon, accompanied by the ulnar nerve, and terminates 

 by anastomosing with the posterior ulnar recurrent, and anastomotica magna. 



The anastomotica magna arises from the brachial, about two inches above the 

 elbow-joint. It passes trans- 

 versely inwards upon the Fi S- 286 The Surgical Anatomy of the Radial and 

 Brachialis Anticus, and pierc- Ulnar Arteries " 



ing the internal intermuscular 

 septum, winds round the back 

 part of the humerus between 

 the Triceps and the bone, 

 forming an arch above the 

 olecranon fossa, by its junc- 

 tion with the posterior articu- 

 lar branch of the superior 

 profunda. As this vessel lies 

 on the Brachialis Anticus, an 

 offset passes between the in- 

 ternal condyle and olecranon, 

 which anastomoses with the 

 inferior profunda and poste- 

 rior ulnar recurrent arteries. 

 Other branches ascend to join 

 the inferior profunda; and 

 some descend in front of the 

 inner condyle, to anastomose 

 with the anterior ulnar re- 

 current. 



The muscular 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 Brachi- 

 alis Anticus muscles. 



RADIAL ARTERY. 



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, arid passes along the 

 radial side of the forearm to 

 the wrist; it then winds back- 

 wards, round the outer side 

 of the carpus, beneath the ex- 

 tensor tendons of the thumb, 

 and, finally, passes forwards 

 between the two heads of the 

 first Dorsal Interosseous mus- 

 cle, into the palm of the hand, 

 where it crosses the metacar- 

 pal bones to the ulnar border 

 of the hand, to form the deep 



JDerf fonncA if 



