๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

The ultimobranchial body of reptiles

โœ Scribed by Clark, Nancy B.

Publisher
John Wiley and Sons
Year
1971
Tongue
English
Weight
812 KB
Volume
178
Category
Article
ISSN
0022-104X

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โœฆ Synopsis

Reptilian ultimobranchial bodies, located anterior to the heart in the region of the thyroid and parathyroid glands, are composed of cell cords and follicles. The cells show secretory activity and are similar histologically and ultrastructurally to ultimobranchial tissue from other vertebrate classes. Turtle ultimobranchial glands are unusual i n containing numerous cytoplasmic granules or bodies which appear to be associated with the material seen within the ultimobranchial follicles.

Ultimobranchial extracts from lizards or turtles can induce hypocalcemia in rats. However, calcitonin preparations or ultiinobranchial extracts have not induced any significant change i n blood calcium or phosphate values i n reptiles. Further studies are required i n order to clarify the role of the ultimobranchial bodies i n this diverse vertebrate group.

๐Ÿ“œ SIMILAR VOLUMES

Ultimobranchial body cysts in the human
Ultimobranchial body cysts in the human foetal thyroid: Pathological implications
โœ B. A. Fraser; J. W. A. Duckworth ๐Ÿ“‚ Article ๐Ÿ“… 1979 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 469 KB

In a histological study of 28 human foetal thyroids, ultimobranchial body cysts were found in seven foetuses. Large oval cells were seen adjacent to or within the cysts. There is a morphological resemblance between the cells associated with the ultimobranchial cysts and those of medullary carcinoma

Ultimobranchial body and parathyroid gla
Ultimobranchial body and parathyroid glands of the freshwater snakeNatrix piscator in response to vitamin D3 administration
โœ Srivastav, Ajai K. ;Rani, Ladli ๐Ÿ“‚ Article ๐Ÿ“… 1992 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 763 KB

## Abstract Vitamin D~3~ (20 I.U./100 g body wt) was administered to the freshwater snake __Natrix piscator__ for 15 days. Elevation of serum calcium and inorganic phosphate levels was observed after the treatment. The ultimobranchial body became active whereas the parathyroid glands exhibited redu