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 thyroid gland. Ultimobranchial glands produce the hormone calcitonin, which reduces the amount of calcium in the blood.
ULTIMOBRANCHIAL GLAND
Meaning of ULTIMOBRANCHIAL GLAND in English
Britannica English vocabulary. Английский словарь Британика. 2012