<prompt> Umbilical cord has2 veins and 1 aery1 aery and 1 vein2 aeries and 1 vein2 aeries and 2 veins  <response>: This tube of amnion and the structures within it constitutes the umbilical cord.T his cord contains two umbilical aeries and one umbilical vein. REF HUMAN EMBRYOLOGY; Inderbier singh; Tenth edition; Page 67 