THE PERITONEUM. 



903 



The transverse mesocolon is a broad fold, which connects the transverse colon 

 to the posterior wall of the abdomen. It is formed by the two ascending or 

 posterior layers of the great omentum, which, after separating to surround the 

 transverse colon, join behind it, and are continued backward to the spine, where 

 they diverge in front of the duodenum. This fold contains between its layers the 

 vessels which supply the transverse colon. 



Kig/it lateral Falciform ligament Left lateral 



ligament of liver. of liver. ligament of lit 



Vena cava inferior.'"! 



Jnf. pane. -duo. artery. 



Calico, media. -' 



Superior mesenteric. 



Duodenum (3rd part). 



Aorta. 



Duodenum (2nd part). 



Bight and left kidneys. 



''ir mesenteric. 

 Aort( 



Peritoneum. 

 Extra-peritoneal tissue. 



Diaphragmatic end of 

 gastro-liepatic amentum, 



G astro- phrenic ligament. 



Gastro-splenic omentum. 

 Foramen of Winslow. 

 Duodenum (>st part). 



Costa-colic ligament. 

 Dot between two anterior 

 layers of great omentum. 

 transverse mesa-colon. 



Bare surface for descend- 

 ing colon. 



The two layers of tht 

 mesentery proper. 



Bare surface for ascend- 

 ing colon. 



Sigmoid meso-colon. 



surface for ccecum. 

 rectum. 



C Bare surface for 2nd part 

 i of rectum. 

 5 Left lateral false Uga- 

 ' ~.ntof bladder. 



FIG. 490. Diagram devised by Dr. Dele'pine to show the lines along which the peritoneum leaves the wall 

 of the abdomen to invest the viscera. 



The sigmoid mesocolon is the fold of peritoneum which retains the sigmoid 

 flexure in connection with the left iliac fossa. 



The mesorectum is the narrow fold which connects the upper part of the 

 rectum with the front of the sacrum. It contains the superior hemorrhoidal 

 vessels. 



The appendices epiploicce are small pouches of the peritoneum filled with fat 

 and situated along the colon and upper part of the rectum. They are chiefly 

 appended to the transverse colon. 



Retro-peritoneal fossce. In certain parts of the abdominal cavity there are 

 recesses of peritoneum forming culs-de-sac or pouches, which are of surgical inter- 



