thyroglossal duct

(redirected from Ductus thyreoglossus)
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thy·ro·glos·sal duct

[TA]
a transitory endodermal tube in the embryo, carrying thyroid-forming tissue at its caudal end; normally, the duct disappears after the thyroid has moved to its definitive location in the neck; its point of origin is regularly marked on the root of the adult tongue by the foramen cecum; occasionally, its incomplete regression results in the formation of cysts along its embryonic course.
See also: pyramidal lobe of thyroid gland.
Farlex Partner Medical Dictionary © Farlex 2012

His ca·nal

(hiz kă-nal')
Structural opening in a fetus between the posterior tongue and the developing thyroid. Distal part may form a thyroidal pyramidal lobe and the proximal part is usually obliterated.
Synonym(s): Bochdalek duct, duct of His, duct of Vater, thyroglossal duct.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

thyroglossal duct

A duct in the embryo that runs between the THYROID GLAND and the back of the tongue. Normally, the thyroglossal duct disappears before birth but part or all of it may persist.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005