What is the primary function of the umbilical cord during pregnancy?

The primary function of the umbilical cord during pregnancy is to transport oxygen and nutrients from the placenta to the developing embryo or fetus. The umbilical cord contains blood vessels, specifically two arteries and one vein, which play a crucial role in facilitating this exchange. The vein carries oxygenated and nutrient-rich blood from the placenta to the fetus, while the arteries return deoxygenated blood and waste products back to the placenta for removal.

This transportation is vital as the embryo or fetus relies entirely on the mother for oxygen and nutrients throughout the gestational period. Without the effective functioning of the umbilical cord, the developing fetus would not receive the necessary resources for growth and development.

Other options relate to different aspects of pregnancy but do not reflect the primary role of the umbilical cord. For instance, while the umbilical cord is essential for the embryo's wellbeing, it does not inherently protect the embryo. Similarly, the production of amniotic fluid occurs via the amniotic sac, not the umbilical cord. The anchoring of the embryo is primarily managed by the placenta, rather than the umbilical cord itself. Thus, the focus of the umbilical cord's function is clearly on the vital transport of oxygen and