In the human umbilical cord, are there 2 arteries and 1 vein, or 2 veins and 1 artery?

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Solution

In the human umbilical cord, there are two umbilical arteries and one umbilical vein.
Umbilical cord:
The umbilical cord is the pathway between the baby and the placenta.
So, it contains three vessels - two arteries and one vein.
The artery carries blood from the baby to the placenta. It generally transports the waste from the baby.
The vein carries blood from the placenta to the baby. It transports oxygen and nutrients from the placenta to the baby.

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Similar questions

The umbilical artery carries blood from the fetus to the placenta and the umbilical vein carries blood from the placenta to the fetus. Which is the correct statement regarding
differences in blood composition between the umbilical artery and vein?
(A) Blood in the umbilical artery contains less glucose than blood in the umbilical
vein.
(B) Blood in the umbilical artery contains less carbon dioxide than blood in the
umbilical vein.
(C) Blood in the umbilical artery contains more deoxygenated blood in the
umbilical vein.
(D) Blood in the umbilical artery contains less urea than blood in the umbilical
vein.

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