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ductus[duk´tus] (pl. duc´tus) (L.)
ductus arterio´sus a fetal blood vessel that joins the aorta and pulmonary artery.
ductus de´ferens the excretory duct of the testis, which joins the excretory duct of the seminal vesicle to form the ejaculatory duct; called also vas deferens.
patent ductus arteriosus see patent ductus arteriosus.
ductus veno´sus a major blood channel that develops through the embryonic liver from the left umbilical vein to the inferior vena cava.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
in the fetus, continuation of the left umbilical vein through the liver to the vena cava inferior; after birth, its lumen becomes obliterated, forming the ligamentum venosum.
Farlex Partner Medical Dictionary © Farlex 2012
duc·tus ve·no·sus(dŭk'tŭs vē-nō'sŭs)
In the fetus, continuation of the left umbilical vein through the liver to the inferior vena cava; after birth, its lumen is obliterated, forming the ligamentum venosum.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012