When and where do chorionic villi appear in humans? State their functi – InterviewSolution

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1.	When and where do chorionic villi appear in humans? State their functions.
Answer» Chorionic villi appear after implantation on the trophoblast. It becomes interdigitated with uterine tissue to form the placenta and increases the surface area for exchange of materials between the mother and the embryo.

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