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Question
How is Placenta formed? What are its functions?
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Solution
It is formed by the union of uterine endometrial tissue, chorion, and allantois (embryonic tissue). It is attached to the wall of the uterus and through it, the exchange of nutrients, hormones, respiratory gases, and urea occurs between the fetal and maternal circulation.
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| Organ/ cells | Hormones | ||
| (i) | Corpus luteum | (a) | HCG |
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