Abstract
The human placenta acts as a barrier separating the blood circulations of the mother and the fetus throughout the entire pregnancy. Fetal blood circulates in vessels located within the chorionic villi while maternal blood circulates around the villi in the intervillous space. Chorionic villi are the functional and morphologic units of the placenta. They are composed of the trophoblast and its basement membrane, the connective tissue of the villous core and the fetal vessels (Fox, 1978; Sandstedt, 1979).
Keywords
Collagen Fibril Human Placenta Chorionic Villus Villous Tree Intervillous Space
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