THE ANNEXES OF THE FCETUS 



15 



II. 

 THE F(ETUS AND ITS ANNEXES. 



1.— The Annexes of the Foetus. 



At the moment the product of conception possesses all 

 its organs, it is termed a foetus. The foetus is surrounded by 



* r^" 





Fig. 7. — Foetal Membranes. 

 o. Amnion ; b, total placentae. 



its annexes, protecting it against external influences, insuring 

 nutrition and union with the mother. They are : the chorion, 

 with the placentae fcetalis ; the amnion, the allantoic, or so-called 

 fcetal urinary bladder; the umbilical vesicle and the umbilical 



