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a short membranous tube passing from the lower end of the saccule to the cochlear duct of the vestibular labyrinth.
The endolymph-containing canal of the inner ear that connects the saccule with the cochlear duct.
See also: ductus
pl. ductus [L.] duct.
a fetal blood vessel that joins the aorta and pulmonary artery. Abnormal persistence of an open lumen after birth results in a patent ductus arteriosus. Called also persistent or patent ductus arteriosus.
see bile duct.
the excretory duct of the testis, which in horses and ruminants joins the excretory duct of the seminal vesicle to form the ejaculatory duct; called also vas deferens.
the duct which, in combination with connective tissue and muscle, forms the head, body and tail of the epididymis and continues as the ductus deferens.
ductus epoophori longitudinales
see gartner's ducts.
the joining channel between the cochlea and sacculus of the membranous labyrinth of the inner ear.
a major blood channel that develops through the embryonic liver from the left umbilical vein to the caudal vena cava and closes within a few days after birth. If it remains patent, a congenital portacaval anastamosis is created.