222 



UROGENITAL SYSTEM 



A T o epithelial cords and no tunica albuginea arc developed at this stage, as in the testis. 

 Later, three important changes take place: (i) There is an ingrowth of connec- 

 tive tissue and blood-vessels from the hilus, resulting in the formation of a media- 

 stinum and of septula. (2) Most of the cells derived from the inner epithelial 



TTubules of 

 mesonefhros 

 (Paroophoron) 



Uterine tube. 



Fig. 



Epithet 



Cortex — 



-Section of an ovary from a 65 mm. embryo. X 44 



Primordial egg 





Primordial ovun 







«^ «■* far 



1 ;"/* 1 



Germinal epithelium 

 Tunica albuginea 



. Pfliiger's egg-tubes 







Blood-vessel 



Primordial ova 



Fig, 



21. — Ovary of five-months 1 fetus, showing egg-tubes and primordial follicles (De Lee). 



