PORTAL 



6.'}; 



The right gastro-epiploic vein accf»m))anies the artery of that name. It runs 

 from left to right along the greater curvature of the stoniach, receiving l>ranches 

 from the anterior and posterior surfaces of that viscus, and from the great omentum, 

 and, passing hehind the first portion of the duodenum, ends in the superior mesen- 

 teric vein just Ijefore that vessel joins the portal trunk. 



The pancreatico-duodenal vein runs with the corresponding arteries hetween 

 the head of the pancreas and the second portion of the duodenum, and ends in the 

 superior mesenteric vein a little below the spot where that vessel is joined by the 

 right gastr( (-epiploic vein. 



The splenic vein issues as several large branches from the hilum of the spleen. 

 These soon unite to foi-m a large trunk, which passes across the aorta and spine in 

 company with the splenic artery, below which it lies, to join at nearly a right angle 



Fig. 394.— The Inferior Mesenteric Vein. 

 (The colon is turned up, and the small intestines are drawn to the right side. ) 



Miitille colic arleri/ 



Iiife.riof pancreatico- 

 duodenal arlery 

 Huperior mesenteric 

 artery 

 Riyht colic artery 



Abdominal aor/n 

 Vena cava infer !■ 



Right common iliac . 



artery 



Middle sacral artery 



anil rein 



Left colic artery 



Inferior mesenteric 

 vein 



Inferior mesenteric 



artery 

 Left colic artery 

 Inferior mesenteric 



artery 



Left common iliac 

 rein 



Sigmoid artery 



Superior h(Fmor- 

 rkoidal artery 



the superior mesenteric vein. In this course it lies behind the pancreas; and at its 

 union with the superior mesenteric to form the vena porta, in front of the inferior 

 vena cava. 



Tributaries. — It receives veins corresponding to tlic vasa brevia arteries from 

 the cardiac end of the stomach, the left gastro-epiploic vein, veins from tlie 

 pancreas, and the inferior mesenteric vein. 



The left gastro-epiploic vein accompanies the left gastro-epiploic artery. It 

 runs from riglit to left along the greater curvature of the stomach, receives branches 

 from the stomach and omentum, and o])ens into the commencement of the splenic 

 vein. 



The inferior mesenteric vein begins at the rectum in the superior and middle 

 hsemorrhoidal veins. It passes out of the pelvis with the inferior mesenteric artery; 

 but, after receiving the veins corresponding with the sigmoid and left colic branches 



