Answers

2014-08-04T21:44:27+05:30
The placenta is a sac like structure found in the a mother's womb. the role of placenenta is to protect the baby from external injury and to provide essential nutrients required by the baby.hope this answer will help u.
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  • Brainly User
2014-08-05T08:28:37+05:30
The chorionic villi and the uterine tissues become interdigitated to form placentawhich is the structural and functional unit between the foetus and the uterine wall of the mother.
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