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प्रश्न
How is Placenta formed? What are its functions?
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उत्तर
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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संबंधित प्रश्न
Name the following:
The fluid surrounding the developing embryo
Differentiate between:
Follicle and corpus luteum
What is Placenta?
The circulatory system of the fetus and that of the mother are never connected directly. What are the advantages?
Name the Following
The expulsion of the fetus from the body of the mother.
Give Technical Term:
A structure which connects the placenta with the fetus.
During pregnancy, which hormones are secreted by the placenta?
In human beings, the placenta is formed by ______.
Match the respiratory surfaces to the organisms in which they are found.
| Organ/ cells | Hormones | ||
| (i) | Corpus luteum | (a) | HCG |
| (ii) | Leydig's cells | (b) | Estrogen |
| (iii) | Placenta | (c) | Progesterone |
| (iv) | Graafian follicle | (d) | Testosterone |
Amniotic fluid serves to provide oxygen to the foetus.
