ABDOMINAL CAVITY 521 



the posterior surface of the left lobe merges with the sharp 

 margin of the organ. 



It has been pointed out that the oesophagus is separated from the bottom 

 of the oesophageal groove in the liver by the prominent anterior margin of 

 the oesophageal opening of the diaphragm, which in the first instance then 

 must be regarded as being responsible for this depression (Birmingham). 



On the posterior surface of the right lobe may be recog- 

 nised (i) the lobus caudatus (Spigelii) ; (2) the fossa for 



Left triangular ligament ^Esophagus Inferior vena cava 

 (O.T. left lateral ^ligament) I Coronary ligament 



Omental tubercle of liver 



Caudate lobe 

 (O.T. spigelian) 



Pyloru 



FIG. 201. Liver, Right Kidney, Spleen, and Stomach, as seen from behind. 

 Drawing taken from a model prepared by the reconstruction method. 



the inferior vena cava ; and (3) an extensive bare area 

 uncovered by peritoneum. 



The lobus caudatus (O.T. lobus Spigelii) is the portion of liver 

 substance which lies between the fossa of the ductus venosus 

 and the fossa of the inferior vena cava. Its lower end appears 

 on the under surface of the liver immediately behind the porta 

 hepatis. It is separated into the papillary process on the left 

 and the caudate process on the right (Fig. 200). The 

 caudate lobe forms the bottom of the vertebral hollow, and 

 is separated from the bodies of the tenth, eleventh, and 

 twelfth dorsal vertebrae by the diaphragm and the lower part 

 of the descending thoracic aorta. 



