Parathyroid glands are small endocrine glands in the neck of humans and other tetrapods.
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10 Facts About Parathyroid
2.
Parathyroid glands are derived from the epithelial lining of the third and fourth pharyngeal pouches, with the superior glands arising from the fourth pouch and the inferior glands arising from the higher third pouch.
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3.
Parathyroid glands are two pairs of glands usually positioned behind the left and right lobes of the thyroid.
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4.
Parathyroid glands are variable in number: three or more small glands, and can usually be located on the posterior surface of the thyroid gland.
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5.
Parathyroid glands are named for their proximity to the thyroid—and serve a completely different role than the thyroid gland.
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Richard Owen6.
Parathyroid development is regulated by a number of genes, including those coding for several transcription factors.
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7.
Parathyroid hormone is a small protein that takes part in the control of calcium and phosphate homeostasis, as well as bone physiology.
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8.
Parathyroid glands were first discovered in the Indian Rhinoceros by Richard Owen in 1852.
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9.
Parathyroid hormone was isolated in 1923 by Adolph M Hanson and 1925 by James B Collip.
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10.
Parathyroid glands are found in all adult tetrapods; they vary in their number and position.
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