THE BODY CAVITIES, DIAPHRAGM AND MESENTERIES 



I8 7 



Esophagus 



Mesoderm of left lung bud 

 Pericardial cavity 



Pleura-peritoneal 



membrane 

 $ Phrenic nerve 



Septum transversum 



Pkinal cavity 



Right lung bud 



Pleuro-pericardial 

 membrane 



Wall of heart 



Liver- 



Fakifoam ligament 



FIG. 195. Transverse section through a 10 mm. human embryo, showing the pleuro-pericardial 

 membranes separating the pericardium from the pleural cavities. X 33- 



Esophagus 

 Right htng 



Coronary appendage of 

 liver 



Vena cava inferior 



Pleural cavity 



Pleura-peritoneal 

 membrane 



Phrenic nerve in septum 

 transversum 



FIG. 196. Transverse section through a 10 mm. human embryo, showing the pleuro-peritoneal 



membranes. X 16. 



