448 



DISSECTION OF THE ABDOMEN. 



scends beneath the duodenum near the pylorus, and turning to the left 

 along the great curvature of the stomach, inosculates with the left 

 gastro-epiploi'c of the splenic artery. To the surfaces of the stomach some 

 offsets are given ; and others descend between the layers of the omentum. 

 It furnishes the following named branches to the stomach, and the pan- 

 creas and duodenum : 



Small inferior pyloric branches end in the small extremity of the 

 stomach. 



Fig. 145. 



VlEW OF THR CtEI.IAC AXIS, AND OF THE VlSCFR A TO WHICH 



ITS BRANCHES ARE SUPPLIED (Tiedmann). 



A. Liver. 



B. Gall-bladder, 

 c. Stomach. 



D. Duodenum. 



E. Pancreas. 



F. Spleen. 



Vessels : 



a. Aorta. 



b. Upper mesenteric. 



c. Coeliac axis. 



d. Coronary. 



e. Splenic. 



/. Left gastro-epiplolc. 



g. Hepatic. 



h. Right gastro-epiplolc. 



i. Superior, and k, inferior pan- 



creatico-duodenal. 

 I. Diaphragmatic arteries. 

 n. Cystic. 

 o. Superior pyloric. 



The pancreatico-duodenal branch (Y) (superior) arises opposite the duo- 

 denum, and runs between the intestine and the pancreas ; it anastomoses 

 below with the pancreatico-duodendal branch (inferior) of the superior 

 mesenteric (fig. 146, 6). Both the duodenum and the pancreas receive 

 offsets from this vessel. On the posterior aspect of the same viscera is 

 another small offset of the pancreatico-duodenal with a similar position 

 and distribution. 



The hepatic branches (right and left) sink into the liver a,t the trans- 

 verse fissure, and ramify in its substance : 



The right branch is divided when about to enter the transverse fissure, 

 and supplies the following small artery to the gall bladder. The cystic 

 artery (n) bifurcates on reaching the neck of the gall bladder, and its two 

 twigs ramify on the opposite surfaces. 



The left branch is smaller than the other, and enters the liver at the 

 left end of the transverse fissure : a branch to the Spigelian lobe of the 

 liver arises from this piece of the artery. 



PORTAL VEINS. The veins of the Intestinal tube, and of the spleen and 

 pancreas, pour their blood into the vena portas. The two mesenteric veins 

 and their branches have been referred to (p. 441); and the two following, 

 with the trunk of the portal vein, remain to be noticed. 



The superior coronary vein (fig. 146,/) lies along the upper border of 

 the stomach. It begins in the resophagus and the left part of the stomach, 

 and joins the vena portae at the pylorus. 



The splenic vein (fig. 146) is large in size, and is formed by the union 

 of branches from the spleen. It takes much the same course as, but below 



