Multiple choice

Which of the following statements is not true about the role of placenta?

  1. Hormones like insulin, steroids, thyroid hormones, etc. cross the placenta at a very slow rate.

  2. Excretory wastes such as urea, uric acid and creatinine from the fetus are excreted to the maternal blood through placenta by diffusion.

  3. Intake of oxygen and out-take of carbon dioxide occurs by simple diffusion across the fetal membrane.

  4. The placenta during first half of pregnancy is permeable to bacteria and macromolecules.

  5. -
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

It is not true as the placenta is impermeable to bacteria and macromolecules. Therefore, it reduces the chances of appearance of maternal ill health on the fetus.

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