A normal umbilical cord has 3 blood vessels. One vein, two arteries. Vein carries oxygenated blood to the baby , while arteries carry deoxygenated blood from baby to the mother where the waste is excreted through the kidneys ,urine of the mother.
Umbilical cord has 3 vessels: 1 vein which bring nutrients to baby and 2 veins that bring waste back to the placenta.
Mrs Loh