628 



CIRCULATORY SYSTEM OF THE PIG 



atico-duodenal and right gastro-epiploie. The anterior gastric usually supplies the 

 oesophageal artery. The continuing trunk (A. hepatica propria) gives off a cystic 

 branch and divides in the portal fissure into four branches which supply the liver. 

 The splenic artery gives off the posterior gastric (usually), branches to the stomach 

 above the cardia, twigs to the pancreas, short gastric arteries to the left part of 

 the great curvature, and splenic branches, and is continued as the left gastro- 

 epiploic artery. 



The posterior gastric may arise from tlie gastro-hepatio or in the angle of divergence of the 

 two primary divisions of the cceliac. The oesophageal branch may come from the splenic. 



Fig. 480. — Arteriks of Distal Part of Right Fore 

 Limb of Pig, Anterior View. 

 a, Terminal part of volar interosseous artery; 

 b, dorsal interos-seous artery; c, rete carpi dorsale; 

 d, dorsal metacarpal arteries; e, dorsal common dig- 

 ital arteries; /, dorsal proper digital arteries. 



Fig. 481. — Arteries of Distal Part of Right Fore 

 Limb of Pig, Posterior View. 

 g. Ulnar artery; h, superficial branch of radial 

 artery; /, collateral ulnar artery; j, volar interosseous 

 artery; h, deep branch of radial artery; k, deep volar 

 metacarpal arteries; /, superficial volar metacarpal 

 arteries; 7?i, volar common digital artery; n, volar 

 proper digital arteries. 



The anterior mesenteric artery is long like that of the ox. It gives twigs to 

 the pancreas, the ilio-Ciecal and two colic arteries, and is continued in the mesentery 

 as the artery of the small intestine. This gives off numerous branches which form 

 a series of arches along the mesenteric lymph glands. From these is formed a rich 

 network which gives off innumerable fine branches placed close together. The 

 colic arteries enter the axis of the spiral coil of the colon and anastomose at its 

 apex. Thoir branches also form rich networks. 



A phrenico-abdominal artery arises on either side a little in front of the renals. 

 It divides into branches which go to the costal jiart of the diaphragm and the abdom- 

 inal muscles. 



Tlie renal and spermatic arteries iiresent no special characters. 



