<prompt> Umbilical cord has ___1 vein and 2 aeries2 vein and 2 aeries1 vein and 1 aery2 veins and 1 aery  <response>: Umbilical cord contain two aeries one vein. Ref : Ghai essential of pediatrics, 19th edition, p.no402 ; Davidson principal and practice of internal medicine, 22nd edition, p.no:630 