THE EXTERNAL GENITALIA 



22Q 



Miillerian duct 



Bladder' 



Mesonephros 



Urogenital sinus 



Intestine 



Phallus 



Cloaca 



INDIFFERENT STAGE 



roopnoron 

 Gartner's duct 



Labium majus 



Labium minor 



Penis 



Uterine lube 



&- Paradidymis 

 Ductulus abberans 



Ductus deferens 



Seminal vesicle 



Scrotum - \ t' \ 



FIG. 238. Diagrams to show the development of male and female genital organs from a 

 common type (after Allen Thompson). 



