Umbilical artery

Umbilical arteries carry deoxygenated blood from the fetus to the placenta in the umbilical cord. There are usually two umbilical arteries present together with one umbilical vein in the cord.

Occasionally, there is only the one single umbilical artery present in the cord. Babies with this finding are usually smaller than normal and have a higher likelihood of having other congenital abnormalities .