262 LABORATORY MANUAL FOR VERTEBRATE ANATOMY 



Cat: The coeliac artery passes toward the stomach and very soon divid< 

 at about the same level, into three branches. The most cranial one is the hepat 

 the next one, the left gastric, and most caudal and largest is the splenic. Tra 

 the splenic artery. It courses in the great omentum toward the spleen and fori 

 One branch goes to the left end of the spleen and sends also branches into t 

 pancreas and the short gastric arteries to the stomach. The other branch pass 

 to the right end of the spleen and supplies also branches to the pancreas, t 

 omentum, and the left gastroepiploic arteries to the greater curvature. T 

 left gastric or coronary artery passes to the lesser curvature where it splits in 

 many branches, supplying both sides of the stomach. The hepatic artery pass 

 along the border of the left end of the pancreas and to the dorsal side of the less 

 curvature and enters the hepatoduodenal ligament. It is best found by separa 

 ing the stomach and liver. It lies to the left side of the hepatic portal vein, i 

 it passes the pylorus it gives off the large gastroduodenal branch. This branch 

 into the anterior pancreatico-duodenal artery descending along the beginning 

 the duodenum and supplying also the pancreas; the right gastroepiploic passu 

 from the pylorus along the greater curvature of the stomach to the left; and tl 

 small pyloric artery to the pyloric region (this may also arise independently fro 

 trie hepatic). The hepatic artery proceeds into the liver sending a cystic arte: 

 to the gall bladder. 



The superior mesenteric artery supplies the greater part of the intestine, 

 passes toward the intestine. Follow it, cleaning away fat and lymph glands fro 

 its surface. It first gives rise to the middle colic artery which passes to the tran 

 verse and descending parts of the colon. A little farther on the superior mese 

 teric gives rise simultaneously to the posterior pancreatico-duodenal artery whii 

 ascends along the duodenum, supplying it and the pancreas and anastomosii 

 with the anterior pancreatico-duodenal; and to the ileocolic artery to the caecu 

 and terminal portion of the ileum and sending also a right colic branch to ti 

 ascending colon (this last may arise independently from the superior mesenteric 

 The superior mesenteric then divides into numerous intestinal branches to t! 

 small intestine. 



Draw the branches of the coeliac and superior mesenteric. 



Return now to the dorsal aorta. Its next branches are the paired adren 

 lumbar and renal arteries. In the rabbit the adrenolumbars are branches 

 the renals, but in the cat they arise independently. They pass close to t 

 adrenal gland to which they give an adrenal branch and then course along t 

 dorsal body wall. In the cat each sends a phrenic artery anteriorly to the di 

 phragm. The renal arteries are large vessels passing into the kidneys. T 

 aorta posterior to the kidneys gives rise to the paired arteries to the gonads (the 

 may, however, branch from the renals). They are the internal spermatic arteri 

 in the case of the male and run posteriorly on the dorsal wall to the scrotu: 

 In the female the corresponding ovarian arteries are larger, and in the cat cc 



