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. 



Right lateral 

 ligament of livei 



Falciform ligament Left lateral 



of liver. ligament of liver. 



Vena cava inferior 



(Esophagus 

 Sight phrenic artery 



Coronary artery 

 Hepatic artery 



Splenic artery. 

 Pancrea. 



Inf. pane. -duo. artery 



Colica media 



Superior mesenteric 



Duodenum (3rd part) 



Aorta 



Duodenum (2nd part) 



Rioht and left kidneys 



Superior mesenteric 



Aorta. 



Colica sinistra. 



Colica deztra 



Tata intestini. 5 



Sigmoid artery. 

 Sup. hcemorrhoidal artery. 



Common iliac artery." 



internal iliac artery. 



Epigastric artery. 

 Bladder. 



Peritoneum. 

 Extra-peritoneal tiltue. 



( Diaphragmatic end of 

 \ gaitro-hepatic amentum, 

 Gastro-plirenic ligament. 



Castro-splenic omentum. 

 Foramen of Winslmo. 

 Duodenum (tat part). 



Costo-colic ligament. 

 ( Dot between two anterior 

 t layers of great omentum. 

 Transverse mesa-colon. 



J Bare surface for descend- 

 t ing colon. 



iThe two layers of tnt 

 mesentery proper. 



\ Bare surface fo-i 

 < ing colon. 



.......Sigmoid mesa-colon. 



Bare surface /or cascum. 

 JUeso-rectum. 



5 Bare surface for 2nd part 

 t of rectum. 

 5 Left lateral false Uga- 

 ( ment of bladder. 



FIG. 490. Diagram devised by Dr. Del6pine 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 cuh-de-sac or pouches, which are of surgical inter- 



