BODY CAVITIES, DIAPHRAGM AND MESENTERIES 



189 



to the septum grows the liver. This portion of the ventral mesentery gives rise 

 dorsally to the lesser omentum of the stomach and, with the septum transversum, 



Esophagus 



Spina,!. Corct 



Pericardial 

 Ccwify 



Ventricle of 

 heart 



Ventral mesotardium 



Liver — 



ventral mesentery 



(~fa.lt t form l igameni 



Ventral mesentery 

 {lesser omentum) 



Dorsal 

 mesogasirium 

 Dorsal 

 pancreas 



Mesentery 



Mesocolon 



^Mesorectum 



Fig. 182. — Diagram showing the primitive mesenteries of an early human embryo in median sagittal sec- 

 tion. The broken lines A, B, and C indicate the level of sections A, B, and C in Fig. 183. 



nz j , , Neural iubi 



nolo chord 



Aorta. Motochord 



Post cardinal Aorta. 

 Vein 



Dorsal mesentery 

 JJllo denum 



Gut 



Lesser 



~Psntonea-t cavity^ 



Fig. 183. — Diagrammatic transverse sections. A , through the heart and pericardial cavities of an early 

 human embryo; B, through the stomach and liver; C, through the intestine and peritoneal cavity. 



it forms the ligaments of the liver. Ventrally it persists as the falciform ligament 

 (Fig. 183 B). 



