THE ABDOMEN, INTERIOR. 463 



part of the alimentary canal to which it is attached. That 

 to the stomach is the mesogaster, to the duodenum is 

 mesoduodenum, to the small intestine is mesentery, to the 



Diag. 32. To ILLUSTRATE THE DEVELOPMENT OF THE ALIMENTARY CANAL 

 AND PERITONEUM. The development is traced within the outlines of an adult 

 abdominal cavity in order to make the subject clearer. (/. 5". //.) a, Stomach. 

 b, Duodenum, c, Small intestine, d, Large intestine, e, Liver, f, Spleen, g, 

 Pancreas, h, Vitello-intestinal duct, i, Mesogaster. 2, Mesoduodenum. 3, Mesen- 

 tery. 4, Mesocolon. 5, Mesorectum. 6, Gastrohepatic omentum. 7, Suspensory 

 ligament of liver. 



large intestine mesocolon, then mesosigmoid, and meso- 

 rectum. 



There are arteries developing during this stage. Along 

 the back of the foetus is the aorta, lying between the two 



