ultimobranchial

ultimobranchial
Designating the fifth (last) pharyngeal pouch of the embryo

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  • ultimobranchial — In embryology, relating to the caudal most pharyngeal pouch. [L. ultimus, last, + G. branchia, gills] * * * ul·ti·mo·bran·chi·al .əl tə mō braŋ kē əl adj being, relating to, produced by, or derived from the ultimobranchial bodies * * *… …   Medical dictionary

  • ultimobranchial body — n a hollow vesicle that is formed from the fourth pharyngeal pouch, may represent a fifth pharyngeal pouch, and gives rise to cells that produce calcitonin and later become incorporated into the thyroid gland in higher vertebrates or persist as… …   Medical dictionary

  • Ultimobranchial body — Infobox Embryology Name = PAGENAME Latin = GraySubject = GrayPage = Caption = Caption2 = System = CarnegieStage = Precursor = fourth pharyngeal pouch GivesRiseTo = parafollicular cells MeshName = Ultimobranchial+body MeshNumber = A13.939… …   Wikipedia

  • ultimobranchial gland — ▪ anatomy       in biology, any of the small bodies in the pharynx that develop behind the fifth pair of gill pouches in the vertebrate embryo. In mammals the ultimobranchial tissue has become incorporated into the parafollicular cells of the… …   Universalium

  • ultimobranchial — ul·ti·mo·branchial …   English syllables

  • ultimobranchial — |əltəmō+ adjective Etymology: Latin ultimus last + English o + branchia + al : relating to or derived from the last gill pouch …   Useful english dictionary

  • ultimobranchial gland — a paired endocrine gland producing calcitron which helps regulate the calcium level by lowering it. Located between the ventral wall of the oesophagus and the sinus venosus. See also corpuscles of Stannius …   Dictionary of ichthyology

  • ultimobranchial bodies — embryonic derivatives of the fourth pharyngeal pouches (sometimes described as a rudimentary fifth pouch); they migrate along with the parathyroid glands and are incorporated in the thyroid gland. In vertebrates other than mammals, these remain… …   Medical dictionary

  • ultimobranchial cells — parafollicular c s …   Medical dictionary

  • ultimobranchial glands — see under body …   Medical dictionary

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