Which one of the following statements is correct about placenta?(a) Pl

1.	Which one of the following statements is correct about placenta?(a) Placenta is permeable to all bacteria(b) Oxygen and carbon dioxide cannot diffuse through the placenta(c) Waste products diffuse out of placenta into maternal blood(d) Placenta does not secrete chorionic gonadotropins
Answer» Answer is : (c) Waste products diffuse out of placenta into maternal blood Placenta allows the foetus to transfer waste products to the mother’s blood. Other statements can be corrected as Placenta gives protection against most bacteria and does not allow infections to enter the foetus. Placenta allows gaseous exchange via the mother’s blood supply, i.e. it allows diffusion of O₂ and CO₂. Placenta produces hormones like human Chorionic Gonadotropin (hCG), progesterone, oestrogen and human Placental Lactogen (hPL).

Which one of the following statements is correct about placenta?(a) Placenta is permeable to all bacteria(b) Oxygen and carbon dioxide cannot diffuse through the placenta(c) Waste products diffuse out of placenta into maternal blood(d) Placenta does not secrete chorionic gonadotropins

Answer»

Answer is : (c) Waste products diffuse out of placenta into maternal blood

Placenta allows the foetus to transfer waste products to the mother’s blood. Other statements can be corrected as Placenta gives protection against most bacteria and does not allow infections to enter the foetus.

Placenta allows gaseous exchange via the mother’s blood supply, i.e. it allows diffusion of O₂ and CO₂. Placenta produces hormones like human Chorionic Gonadotropin (hCG), progesterone, oestrogen and human Placental Lactogen (hPL).

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