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Thyroglossal duct
From Wikipedia, the free encyclopedia
(Redirected from Ductus thyreoglossus)
| Thyroglossal duct | ||
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| Duct not labeled, but arises nearest to region identified as 'pyramidal lobe') | ||
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| Pattern of the branchial arches. I-IV branchial arches, 1-4 branchial pouches (inside) and/or pharyngeal grooves (outside) a Tuberculum laterale b Tuberculum impar c Foramen cecum d Ductus thyreoglossus e Sinus cervicalis |
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| Latin | ductus thyroglossalis | |
| Carnegie stage | 14 | |
| Dorlands/Elsevier | d_29/12315154 | |
The thyroglossal duct is an embryological anatomical structure which forms the connection between the initial area of development of the thyroid gland and its final position.
The thyroid gland starts developing in the pharynx in the fetus and descends to its final position taking a path through the tongue, hyoid bone and neck muscles. The connection between its original position and its final position is the thyroglossal duct. This duct normally atrophies and closes off before birth but can remain open in some people.
Failure of the thyroglossal duct to atrophy leads to a persistent thyroglossal duct.
- thyroglossal+duct at eMedicine Dictionary
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This developmental biology article is a stub. You can help Wikipedia by expanding it. |
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| Branchial region | Branchial arch (1st/Meckel's cartilage, 2nd)/Branchial pouch - Cervical sinus - Lateral lingual swelling - Tuberculum impar - Frontonasal prominence - Olfactory pit - Nasal processes - Globular process - Primitive palate - Maxillary prominence |
| Tooth development | Dental papilla - Odontoblast - Ameloblast |
| Other | Thyroglossal duct |