THE VEINS. 249 



communicates above with other vesical twigs which open into the 

 haemorrhoidal vein. 



13. Parietal veins, which join the anterior abdominal vein in its 

 course along" the ventral body- wall. 



y. A cardiac vein [Vena cardiacd), (Figs. 142, 159 re, 164 c), 

 which joins the anterior abdominal vein just before its division 

 (see p. 332). 



The hepatic portal vein ( Vena j)ortarnm), (Figs, t 59, 1 64 F) 

 is formed by the union of the gastric, intestinal, splenic, and one 

 of the haemorrhoidal veins. The large vein so constituted passes 

 forwards towards the liver, receives the Ramus (leseeudens from the 

 anterior abdominal vein, and then passes into the left lobe of the 

 liver. Its branches are the following : — 



(i) The gastric veins. The stomach has three veins : — 



a. [The Jena eoronaria ventriculi, which receives blood from the 

 hinder end of the oesophagus and anterior portion of the stomach. 



^ and y. Two other veins which form an Arciis coronarius on the 

 concave surface of the stomach; the hinder receiving in addition 

 the small Venae pancreaticae and the Tena dnodenalis ; the trunk so 

 formed receives the Vena corojiaria ventriculi (Hoffmann). 



(2) The intestinal veins ; the veins of that portion of the ali- 

 mentary canal between the middle of the duodenum and the 

 anterior end of the large intestine open into a common vein which 

 joins the hepatic portal vein. 



(3) The splenic vein joins either the hepatic portal vein or one 

 of the intestinal veins. 



(4) The haemorrhoidal veins are three in number ; the anterior 

 opens into the splenic vein, the remaining two into the portal veins 

 through the agency of the intestinal veins.] 



4. The Veins of the Hinder Extremity. 



The hinder extremity has two venous trunks, the sciatic vein and 

 the femoral vein, 



a. The femoral vein [Vena fenwralis), (Fig. 165/) is the larger 

 venous trunk of the hinder extremity. It arises in the popliteal 

 space as a direct continuation of the posterior tibial vein, courses 

 upwards in company with the sciatic artery and nerve, then leaves 

 these to wind forwards and outwards, and appears between the 

 origins of the M. vastus externus and of the M. rectus anterior. 



