THE EXTERNAL GENITALIA 



229 



Miillerian duct 



Bladder 



Mesonephros 



Urogenital sinus 



Phallus 



Mesonephric duct 



Intestine 



Cloaca 



INDIFFERENT STAGE 



jParoophoron 

 rt Gartner's duel 



Uterine tube 



Labium majus 

 Labium minor 



Vagina 



FEMALE 



A ppendix testis 



Testis- 

 Bladder 



Penis 



Epididymis 



Paradidymis 

 < Ductulus abberans 



Ductus deferens 



Seminal vesicle 



Scrotum -j \ I V; 



MALE 



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

 common type (after Allen Thompson). 



