umbilic al, umbilicall

[Lat. umbili cus the navel.] Of or pertaining to the navel; formed in the middle like a navel; navel-shaped, central. "The chapter-house is large, supported as to its arched roof by one umbilical pillar."- De Foe : Tour thro' Great IMG:content-1649.png:[blocks in formation] IMG:content-1650.png:[blocks in formation] Anat.: A fibrous ring which surrounds the aper- ture of the umbilicus, and through which umbilical hernia occurs in children. umbilical-vein, s . [UMBILICAL-VESSELS.] umbilical-vesicle, s . [YOLK-SAC.] 1. Anat .: A comprehensive name including the two umbilical arteries (continuations of the primitive iliacs) and the umbilical vein of the human fœtus. The latter arises from the placenta, and conveys to the fœtus the blood nece ary for its nutrition, the residuum being carried back to the placenta by the umbilical arteries. As soon as respiration begins the arteries are transformed into fibrous cords, and the vein becomes the round ligament ( lig amentum rotundum ) of the liver. 2. Bot . The ve els which pa along the umbilicus or funicle to transmit nourishment to the coty ledons. *um-bil-1-cal-i-tỹ, s . [Eng. umbilical ; -ity.] Character as determined by an umbilicus.