GENITAL GLANDS 



187 



cloaca 



Wolffian 

 ducts 



-crelom 



.~!>''lvi>i of 



cloacal 

 membrane 



FIG. 235. PELVIS; HUMAN EMBBYO OP 11-5 MM. (FOUR AND A-HALF WEEKS). 

 (After Keibel, from Kollmann's Entwickelungsgeschichte.) 



* septum uro-rectale. 



umbilical artery 



bladder 



; ovary 



broad 

 ligament 



symphysis > 



urogenital sinus, / 



^-- ' 



Mullerian 

 duct 



Wolffian duel 



genital papilla /' 



| 

 urogen. sinus ^JL_ 



axiom 



"" rectum 



coccyx 



FIG, 236. PELVIS ; HUMAN EMBBYO OF 25 MM. (EIGHT AND A-HALF TO NINE WEEKS OLD). 

 (After Keibel, from Kollmann's Entwickelungsgeschichte.) 



L, liver ; *septum uro-rectale. 



