210 



THE UROGENITAL SYSTEM 



Rhombencephalon 



Right lung 



Mesonephric fold 



Lower extremity 



Mesencephalon 



Prosencephahn 



Genital eminence 



Tail 



FIG. 220. Ventral view of the urogenital folds in a human embryo of 9 mm. (Kollmann). 



Lateral body wall 



Post, cardinal vein 



Suprarenal gland 



Glomerulus 



Mesonephric duct 



Inner epithelial mass of genital gland 

 Epithelium of genital gland 



Mesenler 



FIG. 221. Transverse section through the mesonephros, genital gland and suprarenal gland 

 of the right side; from a 12 mm. human embryo. X 165. 



