Which option correctly describes the usual composition of umbilical vessels?

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Multiple Choice

Which option correctly describes the usual composition of umbilical vessels?

Explanation:
Two arteries and one vein are normally found in the umbilical cord. The two arteries carry blood from the fetus to the placenta, delivering deoxygenated blood and waste. The single vein returns oxygenated blood and nutrients from the placenta back to the fetus. This arrangement—two arteries and one vein—is the standard pattern. Variations such as having only one artery or additional vessels are considered abnormal and may indicate potential congenital issues.

Two arteries and one vein are normally found in the umbilical cord. The two arteries carry blood from the fetus to the placenta, delivering deoxygenated blood and waste. The single vein returns oxygenated blood and nutrients from the placenta back to the fetus. This arrangement—two arteries and one vein—is the standard pattern. Variations such as having only one artery or additional vessels are considered abnormal and may indicate potential congenital issues.

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