| UB | ultimobranchial body; Unna boot; upper back; urinary bladder |
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| UBG | ultimobranchial gland |
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| ultimobranchial | In embryology, relating to the caudal pharyngeal pouch. Origin: L. Ultimus, last, + G. Branchia, gills (05 Mar 2000) |
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| ultimobranchial body | A diverticulum from the fourth pharyngeal pouch of an embryo, regarded by some as a rudimentary fifth pharyngeal pouch and by others as a lateral thyroid primordium. The ultimobranchial bodies of lower vertebrates contain large amounts of calcitonin. In mammals the bodies fuse with the thyroid gland and are thought to develop into the parafollicular cells. (12 Dec 1998) |
| ultimobranchial pouch | A transient fifth pharyngeal pouch; it is now considered to be incorporated into the caudal pharyngeal complex, the cells of which become the parafollicular cells (C cells) of the thyroid. Uterovesical pouch, a pocket formed by the deflection of the peritoneum from the bladder to the uterus in the female. Synonym: excavatio vesicouterina, cavum vesicouterinum, vesicouterine pouch. (05 Mar 2000) |
Synonyms : Bodies, Ultimobranchial, Body, Ultimobranchial, Ultimobranchial Bodies
| ultimobranchial |
pertaining to or derived from the fifth pharyngeal pouch.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| ultimobranchial bodies |
embryonic derivatives of the fifth pharyngeal pouches, which migrate along with the parathyroid glands and are incorporated in the thyroid gland. In submammalian vertebrates they remain as discrete masses in the neck or mediastinum throughout adult life. The parafollicular cells of these bodies produce calcitonin. Called also postbranchial b's and telobranchial b's.
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| ultimobranchial c.’s |
parafollicular c's.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| ultimobranchial g.’s |
see under body.
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