ARTERIES OF THE THORACIC LIMB 



613 



through the distal interosseous space, which passes downward, assists in forming 

 the rete carpi volare, and is continued in the metacar])us as the external deep volar 

 metacarj)al artery. This is a small vessel which passes down under the outer 

 l)order of the suspensory ligament and assists in forming the deep volar arch near 

 the fetlock. 



The radial artery is smaller than the ulnar. It descends on the flexor carpi 

 internus, passes over the postero-internal surface of the carpus, and is continued as 

 the internal deep volar metacarpal. At the distal end of the forearm and at the 

 carpus it furnishes branches to the retia carpi. Another branch (A. met. perforans 



V'OI 



Fig. 470. — Arteriks of Distal Part of Right Fore 

 Limb of Ox, Anterior View. 

 a. Interosseous artery; b, dorsal branch of 

 radial artery; c, rete carpi dorsale; d, dorsal meta- 

 carpal artery; e, dorsal common digital arterj'; /, /, 

 dorsal proper digital arteries. 



Fig. 471. — Arteries of Distal Part of Right Fore 

 Limb of Ox, Posterior View. 

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

 of common interosseous arterj'; k, I, m, deep volar 

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

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



proximalis) runs outward between the suspensory ligament and the large meta- 

 carpal bone, passes through the proximal foramen of the bone, and unites wath the 

 interosseous artery; before passing through the foramen it detaches the middle 

 deep volar metacarpal artery (A. met. volaris prof. III.), which descends on the 

 posterior face of the metacarpal bone, receives an anastomotic branch from the 

 internal deep artery, and concurs in the formation of the deep volar arch above the 

 fetlock. 



The ulnar artery, the larger of the two divisions of the median, descends under 



