ABDOMINAL CAVITY 369 



surface of the left lobe. The groove lies anterior to the 

 oesophagus. To the left of the cesophageal groove the 

 posterior surface of the left lobe merges into a sharp margin 

 which separates the superior from the inferior surface. 



It has been pointed out that the cesophageal groove in the liver is 

 usually occupied by the prominent anterior margin of the oesophageal 

 opening of the diaphragm, which, in the first instance, must be regarded 

 as being responsible for the depression (Birmingham). 



On the posterior surface of the right lobe there may be 

 recognised (i) the lobus caudatus (O.T. lobus Spigelii) ; 



Falciform ligament Right triangular ligament 



Left triangular 

 ligament 

 fEsophageal groove 



Lesser omentum 

 Fossa for ductus venosus'' 



Tuber omentale 



Papillary process 



J I 

 Caudate process (O.T. caudate lobe) f 



Impression for suprarenal gland , -, , 



Gall-bladder \3J 



Colic impression 

 FIG. 172. Posterior Surface of the Liver. 



(2) the fossa for the inferior vena cava ; and (3) an extensive 

 " bare area " devoid of 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 inferior surface of the liver immediately behind the porta 

 hepatis. It is divided into the papillary process, on the left, 

 and the caudate process, on the right (Fig. 172). The 

 caudate lobe forms the bottom of the vertebral hollow, and 

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

 twelfth thoracic vertebrae by the diaphragm and the lower part 

 of the descending thoracic aorta. 



VOL. II 24 



