PEE1TONEUM. 



1241 



bncreas it is prolonged anteriorly and downwards as the anterior or upper layer of 

 the transverse mesocolon to the transverse colon (Fig. 969). Here it usually joins 

 the gastro-colic ligament/ but in English text-books it is described, and here it is 

 figured, as being continued down as the anterior layer of the posterior fold of 

 the greater omentum, almost to its inferior border, where it becomes continuous 

 with the anterior layer of the omental bursa already described. 



The transverse tracings at the level of the epiploic foramen and pylorus are 

 shown in Figs. 966 and 967, and can be easily followed without any further 

 description than is there given. 



Top of omental bursa 



Inferior vena cav 

 Lesser omentum (cut) 



Right triangular 

 ligament of liver 



Left triangular ligament of liver 



CEsophageal opening in diaphragm 

 / Gastro-phrenic ligament 



/ Corresponds to ' uncovered area ' of stomach 

 / / / Gastro-splenic ligament (cut) 



Transverse colon crossing duodenu 



Head of pancreas 

 Gastro-colic ligament (cut) 



Part of omental bursa 



Phrenico-colic ligament 



Left end of transverse mesocolon 

 Left colic flexure 

 Transverse mesocolon (cut) 

 Root of mesentery (cut) 



FIG. 969. THE PERITONEAL RELATIONS OF THE DUODENUM, PANCREAS, SPLEEN, KIDNEYS, ETC. 



. 



The lesser omentum is described at p. 1162; it need only be pointed out 

 now that it is composed of two layers, the anterior belonging to the general 

 peritoneal cavity, and the posterior belonging to the omental bursa ; and both 

 layers are extremely thin sometimes even cribriform. 



The greater omentum is a large apron-like fold of peritoneum, usually more 

 or less loaded with fat, which is suspended from the transverse colon, and 

 hangs down in front of the intestines to a variable extent. When the abdomen 

 is carefully opened without disturbing the viscera, it is rare to find the greater 

 omentum evenly spread over the front of the intestines. More commonly it is folded 

 in between some of the coils of intestine, or tucked into the left hypochondrium ; 

 or perhaps it is carried upwards in front of the stomach by a distended transverse 

 colon. The gastro-colic ligament continues the anterior layers of the greater 

 omentum upwards to the stomach, and th.e gastro-lienal ligament continues them 



