Veins of the Trunk. 



459 



V. hepatica ^ V. cava 

 \ inferioi' 

 Y. portae 



Y. coronaria 

 ventriculi A- coeliaca 



V. pylorica 



A. gastroduodenalis \ \ 



' Lien 



Duodenum 

 Y. panereaticoduodenalis 



V. gastroepiploica dextra 



/ Y. mesenterica 

 superior 



^ Y. gastroepiploica 



u sinistra 



Pancreas 



Colon descendens 



Y. colica sinistra 



A. mesenterica superior 



498. Trunk of the portal vein. 



(The stomach, liver and pancreas have heen partially, the small intestine and the transverse 



colon completely, removed.) \ ' ' , 



4. V. coronaria veutrieuli (see also Fig. 497) 'runs- I'rora the right to the. left along 

 the curvatura minor of the stomach, anastomoses at the pyloru's with the v. pylorica, at the 

 cardia with the oesophageal veins and opens near the a. gastrica sinistra into the trunk of the 

 V. portae or the v. Menalis. ; . . 



5. Y. pylorica (see also Fig. 497), more delicate than the preceding, exteiids from the 

 left to the right near the a. gastrica dextra at the curvatura minor of the stomach, anastomoses" 

 with the preceding vein and opens at the pylorus into the stem of the v. portae. 



6. V; cystica (see Fig. 497) from the gall bladder; opens into the stem or the right 

 branch of the portal vein. 



The accessory portal reius (not illustrated) are small vessels which arise in the folds 

 of the per'itonaeum connected with the liver or which come from the stomach and pass either 

 into the stem of the portal vein or directly into the substance of the liver. 



The anastomoses of the portal with the vv. cavae are regularly present as follows: 



1) At the cardia of the stomach between the v. coronaria ventriculi (v. portae) and the 



oesophageal veins (v. azygos) ; 



2) at the rectum in the pL^xus haemorrhoidales between the v. haemorrhoidalis superior 



(v. mesenterica inferior) and the vv. haemorrhoidales mediae et inferiores (vv. hypo- 

 gastricae) ; 



3) iw. fartimbilicales [Sappeyi] (not illustrated), 4 5 small vessels, which are connected 



in the neighborhood of the navel with the superficial veins and with the vv. epigastricae 

 inferiores, extend near the lig. teres hepatis to the liver and (>mpty usually directly 

 into its substance. The largest anastomoses also with the left v. epigastrica superior. 

 One of these veins is said to be the remains of the v. umbilicalis. Tliey are suppUed 

 with valves; the current is directed toward the liver. 



