186 



THE CAT. 



[CHAP. vi. 



posterior surface of the right central lobe is marked by a depression in 

 which lies a pear-shaped bag completely invested by peritoneum 

 called the GALL-BLADDER, which has its blind end (or fundus) 

 directed downwards near (gb), the ventral margin of the liver. The 

 notch at which its fundus is situated, and the depression in which 

 the bladder lies, is called the cystic fissure (of). The fundus of 

 the gall-bladder is occasionally buried in the liver's substance, and 

 appears, through a cleft, in its convex surface. The part of the 

 right central lobe which lies to the left of the gall-bladder (re) is 

 itself bounded on the left by the umbilical fissure already described. 



Fig. 97. SECTION OF A PORTION OF THE LIVER (OF THE PIG), PASSING LONGITUDINALLY 



THROUGH A CONSIDERABLE HEPATIC VEIN, ENLARGED ABOUT FIVE DIAMETERS. 



H. Hepatic venous trunk, against which the 



sides of the lobules are applied. 

 Ji, Ti, li. Three sub-lobular hepatic veins, on 



which the bases of the lobules rest, and 



through the coats of which they are seen as 



polygonal fissures. 



i. Mouth of the intra-lobular veins, opening into 



the sub-lobular veins. 

 i'. Intra-lobular veins, shown passing up the 



centre of some divided lobules. 

 c, c. Walls of the hepatic venous canal, with the 



polygonal bases of the lobules. 



Beyond it lies a very small lobe, the left central lobe, which is 

 separated from a very large lobe the left lateral lobe (II) by a 

 deep fissure called the left lateral fissure (If). 



The bile, or hepatic, ducts issue from the lobes of the liver and 

 the portal fissure, and join the duct which comes from the gall- 

 bladder. The latter duct is called the cystic duct, and the common 

 duct formed by its union with the hepatic ducts, is termed the 

 ductiis communis cholcdocJms (bd). This opens into the duodenum at 

 about an inch and a half from the pylorus after being joined by 

 one of the pancreatic ducts. 



