corpuscles of Stannius
the bud-like evagination(s) from the wall of the pronephric duct anterior to the opisthonephros (Holosteans) or in the posterior region of the opisthonephros (Teleosteans) in the kidney. Function unknown according to some, said to be that of parathyroid glands of other vertebrates, which are lacking in fishes. This organ secretes hypocalcin (teleocalcin) to regulate calcium metabolism

Dictionary of ichthyology. 2009.

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  • Stannius corpuscles — the bud like evagination(s) from the wall of the pronephric duct anterior to the opisthonephros (Holosteans) or in the posterior region of the opisthonephros (Teleosteans) in the kidney. Function unknown …   Dictionary of ichthyology

  • endocrine system — Group of ductless glands that secrete hormones necessary for normal growth and development, reproduction, and homeostasis. The major endocrine glands are the hypothalamus, pituitary, thyroid, islets of Langerhans, adrenals, parathyroids, ovaries …   Universalium

  • hormone — hormonal, hormonic /hawr mon ik, moh nik/, adj. /hawr mohn/, n. 1. Biochem. any of various internally secreted compounds, as insulin or thyroxine, formed in endocrine glands, that affect the functions of specifically receptive organs or tissues… …   Universalium

  • 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

  • parathyroid gland — absent in fishes, function being replaced by corpuscles of Stannius, q.v …   Dictionary of ichthyology

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