THE SECRETING GLANDS 297 



anterior and posterior surfaces comprising the right 

 and left lobes; a lateral surface of the right lobe, only. 



It has an inferior border or margin which is thin and 

 sharp, and notched opposite the falciform ligament, 

 for the round ligament (umbilical notch), and opposite 

 the cartilage of the ninth rib by a second notch for 

 the fundus of the gall-bladder. 



The left extremity of the inferior margin of liver is 

 thin and flattened from above downward. 



The ligaments of the liver are all peritoneal folds, 

 except the round ligament, which is a fetal remnant 

 of the umbilical vein. The ligaments hold the liver 

 in position, and are as follows: 



Falciform or suspensory. Left lateral. 



Coronary. Round. 



Right lateral. 



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

 right is the largest, being six times as large as the 

 left. The left lobe is flattened, lies in the epigastrium, 

 and is in relation below with the stomach. The lobus 

 quadratus is on the under surface of the right lobe. 

 The Spigelian lobe lies behind and above the preceding. 

 The caudate lobe, or tuberculum caudatum, runs outward 

 from the base of the Spigelian lobe to the under surface 

 of the right lobe. 



The fissures of the liver are five. The longitudinal 

 separates the right and left lobes. The fissure of the 

 ductus venosus is the part of the longitudinal fissure 

 behind the transverse. The transverse is the point 

 of exit (hepatic ducts) and entrance of the portal vein, 

 hepatic arteries, nerves, and lymphatic vessels. The 

 fissure for the gall-bladder is on the under surface of 

 the right lobe, parallel to the longitudinal fissure, sepa- 

 rated 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 Structure of the Liver. It is covered by a serous 

 layer derived from the peritoneum, except the posterior 



