992 



THE ORGANS OF DIGESTION. 



anterior layer at the right free border turns behind the vessels, now belongs to 

 the lesser sac, and makes the posterior layer of the hepato-duodenal ligament and 

 of the lesser omentum. These two layers below enclose the stomach, and to the 

 left side form the gastro-splenic omentum. Above, the anterior layer is attached 

 in front of the transverse fissure and then spreads over all the inferior surface of 

 the liver. The posterior layer above is attached just behind the transverse fissure, 

 and here separates from the anterior to pass backward and upward over the 

 Spigelian lobule only. The combined layers leave the left end of the transverse 

 fissure and run along the edges of the fissure for the ductus venosus, passing to 

 the diaphragm and on that forward to the oesophagus, which the two layers partly 

 surround, the anterior one covering its anterior and left side, the posterior one its 

 posterior and right side, in part. The anterior one is the phrenico-gastric liga- 

 ment. Between the two layers of the hepato-duodenal ligament at the right 



Lig. teres in lig. 

 suspensorium^ 



Cystic duct ' 

 Hepatic duct 



Common bile-duct 

 Vena portse , 

 Hepatic artery . 



Lig. hepatico-reiwlf. 



Lifj. hepatico- 



duodenale 



FIG. 615. Upper part of abdominal cavity of a child. The liver has been drawn upward and the lig. hepato- 

 duodenale, containing the hepatic vessels, has been put on the stretch ; its anterior layer has been opened by 

 a vertical incision. A probe passes behind it through the foramen of Winslow into the lesser sac. (Henle.) 



edge of the lesser omentum, the outgoing and ingoing vessels are arranged as 

 represented in Fig. 615. 



Near the duodenum there are three vessels, the common bile-duct to the right, 

 the hepatic artery to the left, and behind and between the two the portal vein. 

 At the transverse fissure of the liver the artery and vein divide into right and 

 left branches for the right and left lobes, and the common bile-duct receives the 

 cystic duct and the hepatic ducts descending from the two lobes. Besides these 

 are lymph-glands and vessels and nerves, all surrounded by connective tissue 

 which is called Grlissoris capsule. 



The foramen of Winslow (J. B. Winslow, 1743) or orificium epiploicum, is 

 the point of communication between the bursa omentalis (lesser sac) and the 

 greater sac. It may be round in shape, triangular or semilunar. It should 

 admit about two fingers. It is best shown when the liver is tilted upward and to 

 the right, and the intestines, with the first part of the duodenum, downward and 

 to the left. Its boundaries are above, the caudate lobe of the liver ; below, the 

 first part of the duodenum and the first part of the hepatic artery as it passes 

 forward ; in front are the right free border of the lesser omentum, lig. hepato- 

 duodenale, with its contained vessels, hepatic artery, vena portse and common 

 bile-duct; behind are the lig. hepato-renale and vena cava inferior. 



