Amputated leg 



Umbilical cord 



Genital- 



papilla 



Anal fold- 



Fig. 150. Undifferentiated Stages of the External Genitalia in Man. 

 (Adapted from Otis). 



Glans pe??;<?.-„s, 'yi^^ 

 Penis — — --^'' --^^"j^ 



Scrotal-^^M- ^- ' / \ V 

 iold ^X , / % 



Urethral groove 

 / Labia majora-. 



Labia minora- 

 Glans chtondi^- 



Vestibule—'\^ _y^ 



■Anus, 



Ami.s, 



/^->^^ ^'^" " ^ penis 





f\ 



'Raphe 

 Scrotum 



Vestibide 



(i: 



-Anus 



Anus- 



§-. 



Fig. 151. Differentiation of Sex in Man. Diagrams (A) and (B) show the 



development in the male; diagrams (C) and (D) are the female. Compare 



undifferentiated stages in Fig. 150. (Adapted from Otis). 



