Which statement about the umbilical cord is accurate?

The umbilical cord serves a critical function in fetal development by providing a conduit for the exchange of nutrients and waste between the mother and the fetus. The statement that accurately reflects this function is that the umbilical cord supplies oxygenated blood from the placenta to the fetus.

In typical fetal circulation, the umbilical cord consists of two arteries and one vein. The single vein carries oxygen-rich blood from the placenta to the fetus, allowing the fetus to receive the necessary oxygen and nutrients for growth and development. This oxygenated blood is essential for the fetus, as it cannot breathe air in the womb; thus, the cord plays a crucial role in ensuring that the fetus receives the oxygen it needs for metabolism and cellular functions.

In contrast, the arteries in the umbilical cord return deoxygenated blood from the fetus back to the placenta, where it can be re-oxygenated by the maternal blood supply. This ongoing exchange is vital for the health of both the mother and the fetus. The statement about the umbilical cord therefore highlights its role in delivering essential oxygen and supporting fetal life.