THE LIVER 439 



to the posterior surface of the liver in the situation of its appo- 

 sition with the diaphragm. It is continuous with the lateral 

 ligaments on each side and with the suspensory in front. 



The fissures of the liver are five. The longitudinal separates 

 the right and left lobes. It is joined by the transverse fissure, 

 or fossa, the part in front of that point being called the umbilical 

 fissure, and lodging the umbilical vein or its remains, the round 

 ligament. The fissure of flic ductus venosus is the part of the 

 longitudinal fissure behind the transverse. It lodges the 

 ductus venosus or its remains. The transverse or fossa or 

 portal fissure is the point of exit and entrance of the vessels, 

 nerves, and ducts. It lies between the quadrate and Spigelian 

 lobes. The fissure for the gall-bladder is on the under surface 

 of the right lobe, parallel to the longitudinal fissure, separated 

 from it by the quadrate lobe. The fissure for the inferior vena 

 cava, sometimes a complete canal, lies to the right of the 

 Spigelian lobule. 



The lobes of the liver are also five in number. The right is 

 the largest, being six times as large as the left, and is separated 

 from the left by the suspensory ligament and longitudinal 

 fissure respectively, and in front by the interlobar notch. 

 Its under surface is marked by the transverse fissure and that 

 of the gall-bladder, and its posterior surface by that of the 

 inferior vena cava, and anteriorly is the impressio colica for 

 the hepatic flexure, behind another, the impressio renalis, 

 for the right kidney, and just to the right of the neck of the 

 gall-bladder, the impressio duodenalis. The left lobe is flattened, 

 lies in the epigastrium, and is in relation below with the stomach. 

 The lobus qnadratus is on the under surface of the right lobe, 

 and is bounded in front by the free surface of the liver, behind 

 by the transverse fissure, on the right by the fissure for the 

 gall-bladder, on the left by the umbilical fissure. The Spigelidn 

 lobe lies behind and above the preceding, and is bounded in 

 front by the transverse fissure, on the right by the fissure 

 of the vena cava, and on the left by the fissure for the ductus 

 venosus. The caudate lobe, or tuber culum caudatum, runs 

 outward from the base of the Spigelian lobe to the under surface 

 of the right lobe, lying between the transverse fissure and that 

 for the inferior vena cava. 



The Structure of the Liver. It is covered by a serous layer 

 derived from the peritoneum, except the posterior surface 



