What is the primary function of the placenta during pregnancy?

The primary function of the placenta during pregnancy is to provide oxygen and nutrients to the growing fetus while simultaneously removing waste products. The placenta acts as a critical interface between the maternal blood supply and the fetal circulatory system. This organ facilitates the exchange of gases, nutrients, and waste products through a specialized network of blood vessels.

Oxygen and essential nutrients from maternal blood pass through the placenta into fetal circulation, supporting fetal growth and development. Waste products from the fetus, such as carbon dioxide and urea, are transferred back to the maternal circulation for elimination. This dual role is vital for maintaining the health of both the mother and the developing fetus throughout pregnancy.

While the placenta does produce hormones essential for maintaining pregnancy and promoting fetal development, and it has some capacity to store nutrients, its primary role remains the effective exchange of oxygen and nutrients, along with the elimination of waste. Thus, the answer emphasizing the functional aspects of nutrient and gas exchange accurately reflects the placenta's essential responsibilities during pregnancy.