what is placenta? mention its role during pregnancy.
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Definition---
The placenta is an organ found only in mammals during development of foetus. It is made up of cells derived from both mother and foetus.
Function of placenta---
Placenta allows the exchange of materials between mother and foetus.It allows the transfer of nutrients and oxygen from mother to foetus.Waste products excreted by the foetus like urea, uric acid and even carbon dioxide are diffused to maternal blood stream by the placenta.Antibodies pass through the placenta that provides immunity to the foetus.Placenta secretes several hormones that are essential for foetal development.
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Your answer-
Definition---
The placenta is an organ found only in mammals during development of foetus. It is made up of cells derived from both mother and foetus.
Function of placenta---
Placenta allows the exchange of materials between mother and foetus.It allows the transfer of nutrients and oxygen from mother to foetus.Waste products excreted by the foetus like urea, uric acid and even carbon dioxide are diffused to maternal blood stream by the placenta.Antibodies pass through the placenta that provides immunity to the foetus.Placenta secretes several hormones that are essential for foetal development.
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Answer:
Placenta is a disc-like structure embedded in the uterine wall. It contains villi on the embryonal side. Blood spaces are present on the mother’s side. Following are the functions of placenta:
Supplying nutrients to the foetus.
Supplying oxygen to the foetus.
Taking away carbon dioxide from the foetus.
Taking away excretory products from the foetus.
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