Chorionic villi which appear on the trophoblast are surrounded by-
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Chorionic villi which appear on the trophoblast are surrounded by- the uterine tissue and maternal blood.
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Chorionic villi which appear on the trophoblast are surrounded by maternal blood and uterine tissue
Explanation:
- the foetus is covered by two membrane. They are known as the amnion and the chorion. The chorion is the outer membrane. It forms finger like extension known as Chorionic villi.
- They help in increase in the surface area for the exchange of gases between the uterine artery and the foetus. The Chorionic villi is very essential for the the transfer of important substances between the foetus and the mother
To know more about chorion,
what is chorion? explain about it - Brainly.in
https://brainly.in/question/42491
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