What is one primary function of the placenta during pregnancy?

One primary function of the placenta during pregnancy is to facilitate the transfer of nutrients and oxygen from the mother to the developing fetus. The placenta serves as a vital organ that connects the mother's circulatory system to that of the fetus, allowing for the exchange of gases and nutrients essential for fetal growth and development. It acts as a barrier, ensuring that harmful substances do not easily cross while still permitting the transfer of necessary components. This process is critical for the fetus's nourishment and survival throughout the gestational period.