THE ABDOMEN, INTERIOR. 



465 



up over the duodenum to the right to a position at the right 

 side of the abdominal cavity, while the small intestine passes 

 to the left and lies within the arch formed by the large in- 



Diag. 34. A THIRD STAGE IN THE PROCESS OF DEVELOPMENT. (/. S. H.} The 

 large intestine having passed upward and crossed from left to right in front of the 

 duodenum. a, Stomach, b, Duodenum, c, Small intestine, d, Large intestine 

 now differentiated into several portions as i, Vermiform appendix, j, Caecum. 

 k, Transverse colon (ascending colon not yet developed). /, Descending colon, m. 

 Omega loop, n, Rectum, e, Liver, f, Spleen, g, Pancreas, i, Mesogaster. 2, 

 Mesentery, 3, Mesocolon. 



testine. (Diags. 34 and 35.) This rotation forms a twist 

 in the mesenteric stalk and a fossa that remains in the adult 

 as the duodenojejunal fossa. 

 30 



