AETERIES OF THE THORACIC LIMB 



711 



sends branches to the biceps, brachiahs, and extensor muscles; it also supplies the 

 nutrient artery of the humerus. It does not descend to the carpus. 



The median artery descends along the medial part of the posterior surface of 

 the radms and divides near the middle of the forearm into the radial and ulnar 

 arteries. It gives off at the proximal third of the forearm the common interosseous 

 artery, a large vessel which anastomoses with the deep brachial, passes through the 

 proximal interosseous space, and descends as the dorsal interosseous artery in the 

 groove between the radius and ulna, and concurs in the formation of the rete carpi 



^<<17 



hhl 



m\ 



■d 



VK' 



:i/ 



Fig. 595. — ^Arteries of Distal Part of Right Fore 

 Limb of Ox; Dorsal View. 

 a. Interosseous artery; 6, dorsal branch of radiai 

 artery; c, rete carpi dorsale; d, dorsal metacarpal ar- 

 tery; €, dorsal common digital artery; /, /, dorsal proper 

 digital arteries. 



Fig. 596. — Arteries of Distal Part of Right Fore 

 Limb of Ox; Volar View. 

 g, Ulnar artery; h, radial artery; i, volar branch 

 of common interosseous artery; k, I, m, deep volar 

 metacarpal arteries; A.v., volar arches; n, volar com- 

 mon digital artery; o, o' , p, volar proper digital arteries. 



dorsale. At the distal end of the forearm it sends a branch through the distal 

 interosseous space, v^hich passes downward, assists in forming the rete carpi volare, 

 and is continued in the metacarpus as the lateral deep volar metacarpal artery. 

 This is a small vessel which passes down under the lateral border of the suspensory 

 ligament and assists in forming the deep volar arch near the fetlock. The recurrent 

 interosseous artery arises from the common interosseous and ascends to the lateral 

 surface of the elbow. A large muscular branch arises from the median at the 

 proximal end of the forearm; it is distributed chiefly to the flexor muscles. 



