Development of Veins in the Liver
Diagram illustrating the development of veins about the liver. B, dc, ducts of Cuvier, right and left; ca, right and left cardinal veins; o, left omphalo-mesenteric vein, almost shriveled up; u, u', umbilical veins, of which u', the right one has almost disappeared. Between the venae cardinales is seen the outline of the rudimentary liver with its venae hepaticae advehentes, and revehentes. D, ductus venosus; i', hepatic veins; P', venae advehentes; m, mesenteric veins.