78 



PLACENTA 



connective-tissue processes, or septa, to which villi are attached, as well as to the 

 general decidual surface. These to some extent divide up the placenta into 





FIG. 107. SECTION THKOUGH A NOBMAL PLACENTA OF SEVEN MONTHS IN SITU. (Minot.) 



Am, amnion; Cho, chorion ; Vi, root of a villus ; vi, sections of the ramifications of villi in the 

 intervillous space the larger blood-vessels within them are represented black ; D, deep layer of the 

 decidua, showing flattened remnants of enlarged glands in spongy stratum ; Ve, uterine vessel opening 

 out of placental sinus ; Me, muscular wall of uterus. 



