Vitelline may refer to: Embryology Vitelline arteries, arteries that bring blood to the yolk sac Vitelline circulation, the system of blood flowing between an embryo and its yolk sac Vitelline cyst, a developmental defect relating to the closure of the vitelline duct Vitelline duct, a tube that joins the yolk sac to the midgut lumen of a human embryo Vitelline membrane, membrane surrounding an ovum Vitelline veins, veins that drain blood from the yolk sac Birds Vitelline masked weaver (Ploceus vitellinus), a species of bird endemic to Africa Vitelline warbler (Setophaga vitellina), a songbird species found in the Cayman Islands and Honduras See also Vitellin, a protein found in egg yolk Vitelli, a surname