Thyroglossal duct

Thyroglossal duct
Thyroglossal duct
Illu08 thyroid.jpg
Duct not labeled, but arises nearest to region identified as 'pyramidal lobe')
Kiemenbogen.jpg
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
Latin ductus thyroglossalis
Carnegie stage 14
Code TE E5.4.2.0.0.1.22

The thyroglossal duct is an embryological anatomical structure forming an open connection between the initial area of development of the thyroid gland and its final position.

The thyroid gland starts developing in the oropharynx 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.

Clinical significance

A thyroglossal duct that fails to atrophy is called a persistent thyroglossal duct, a condition that may lead to the formation of a thyroglossal duct cyst.

External links

v · Human development of endocrine system (TE 5.10)
Pituitary
Stomodeal ectoderm
Thyroid
Thyroid diverticulum · Thyroglossal duct · Ultimopharyngeal body

M: END

anat/phys/devp/horm

noco(d)/cong/tumr, sysi/epon

proc, drug (A10/H1/H2/H3/H5)
v · d · ePrenatal development/Mammalian development of digestive system, coelom and septa, and mesenchymal mesenteric masses (GA 11.1101, TE E5.4, 5.8-9)
Gut
Upper GI tract and accessory
Abdominopelvic
Other
Intra-embryonic coelom · Extra-embryonic coelom

M: DIG

anat(t, g, p)/phys/devp/enzy

noco/cong/tumr, sysi/epon

proc, drug(A2A/2B/3/4/5/6/7/14/16), blte



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Look at other dictionaries:

  • thyroglossal duct — n a temporary duct connecting the embryonic thyroid gland and the tongue * * * thyrolingual duct ductus thyroglossalis …   Medical dictionary

  • thyroglossal duct — noun An embryonic anatomical structure which connects the initial area of development of the thyroid gland to its final position Syn: thyrolingual duct, ductus thyroglossus …   Wiktionary

  • Persistent thyroglossal duct — Infobox Disease Name = PAGENAME Caption = DiseasesDB = ICD10 = ICD10|Q|89|2|q|80 ICD9 = ICD9|759.2 ICDO = OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = A persistent thyroglossal duct is a usually benign medical condition in which …   Wikipedia

  • Thyroglossal cyst — DiseaseDisorder infobox Name = Thyroglossal cyst ICD10 = ICD10|Q|89|2|q|80 ICD9 = ICD9|759.2 OMIM = 188455 DiseasesDB = 13070 eMedicineSubj = ent eMedicineTopic = 283 MeshID = D013955 A thyroglossal cyst is a fibrous cyst that forms from a… …   Wikipedia

  • Thyroglossal cyst — A thyroglossal cyst is a fluid filled sac that is present at birth and located in the midline of the neck. A thyroglossal cyst is a result of incomplete closure of a segment of a tube like structure (the thyroglossal duct) that is present, and… …   Medical dictionary

  • thyroglossal — Relating to the thyroid gland and the tongue, denoting especially an embryologic duct. SYN: thyrolingual. * * * thy·ro·glos·sal .thī rō gläs əl adj of, relating to, or originating in the thyroglossal duct <thyroglossal cysts> * * *… …   Medical dictionary

  • thyroglossal — adjective Of or pertaining to the thyroglossal duct a thyroglossal carcinoma …   Wiktionary

  • duct — A tubular structure giving exit to the secretion of a gland or organ, capable of conducting fluid. SEE ALSO: canal. SYN: ductus [TA]. [L. duco, pp. ductus, to lead] aberrant ducts SYN: aberrant ductules, under ductule …   Medical dictionary

  • Cyst thyroglossal — A thyroglossal cyst is a fluid filled sac present at birth and located in the midline of the neck. A thyroglossal cyst is a result of incomplete closure of a segment of a tube like structure (the thyroglossal duct) that is present, and normally… …   Medical dictionary

  • Thyroid — Infobox Anatomy Name = Thyroid Latin = glandula thyroidea GraySubject = 272 GrayPage = 1269 Caption = Endocrine system Caption2 = Thyroid and parathyroid. Precursor = 4th Branchial pouch System = endocinal jubachina system Artery = superior… …   Wikipedia

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