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Placenta is the structure formed

  • A.By the union of foetal and uterine tissue
  • B.By foetus only
  • C.By fusion of germ layers
  • D.None of these

Answer: A

The placenta is formed by the union of foetal and uterine tissue.

The foetal chorionic villi interlock with the maternal endometrium, so nutrients, oxygen and waste pass between the two circulations without the blood ever mixing. It also secretes hormones that maintain the pregnancy.

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