Umbilical

{um-bil’-ik-al) [umbilicus, the navel]. I. Pertaining to the umbilicus, as, e. g., the U. cord, U. ve els. 2. Pertaining to the U. cord or U. ve els. U. Region, the central of the regions into which the abdomen is divided for purposes of physical diagnosis. U. Ring, the aperture, closed in the adult, through which the umbilical ve els pa in fetal life. U. Souffle, the peculiar sound heard occasionally over the umbilical cord of the fetus. U. Vesicle, the part of the yolk-sac remaining outside of the embryo and supplying nutriment to it through the omphalomesenteric duct. 643