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Showing posts with the label Fatal circulation (placenta)

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Fatel Circulation Placenta

  Placenta .  1) Placenta is a temporary organ derived from the tissues of the fetus as well as the mother.   2) Human placenta is called chorionic placenta as it is made up of chorion which is an extra-embryonic membrane.Only  (3) Blood vessels from the allantois vascularize the placenta. Branching villi emerge from the chorior and penetrate into the corresponding pits which are located in the uterine wall.   4) There are two parts of placenta, viz. fetal placenta and maternal placenta.   5) Foetal placenta is formed of chorionic villi.   (6) Maternal placenta is formed of uterine wall which is in intimate contact with the chorionic villi.   (7) Chorionic villi receive the blood from the embryo by the umbilical umbilical vein returns the blood back to the embryo.  (8 ) Human placenta is said to be haemochorial because a part of placenta is from fetus which has chorionic villi. The other highly vascularized part is...