Multiple choice

Select the true statement regarding the functions of the placenta.

  1. It nourishes the developing embryo by establishing a dialysis pattern for exchange between the maternal and fetal circulations.

  2. The placental wall is highly lean, thin & is freely permeable to glucose and amino acids.

  3. The PO2 of the blood of the umbilical vein is similar as that in the maternal arterial blood.

  4. The estrogens released by the placenta tend to inhibit uterine excitability during pregnancy.
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A Correct answer
Explanation

The conduction of the intervillous spaces of the placenta with maternal blood allows the conduction of nutrients and oxygen from the mother to the fetus. Nutrient transfer to the developing embryo takes place through both active and passive transport.

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