Where does this come from, and can I check it?

Parathyroid hormone raises calcium by acting on bone, kidney and vitamin D. The figure is taken from Endocrine Society, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a human body fact?

Yes. It sits on the Human Body shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Four tiny neck glands regulate blood calcium

Parathyroid hormone raises calcium by acting on bone, kidney and vitamin D The four parathyroid glands sit behind the thyroid and monitor calcium in the blood. When it drops, they release parathyroid hormone, which prompts bone to release calcium, kidneys to reclaim it and vitamin D to be activated. Calcitonin from the thyroid works in the opposite direction. It sits in Mondo's human body collection, one of 200 facts that each trace back to the reference below.

Where this comes from

Endocrine Society

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Science trivia

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Aldosterone tells the kidney to hold on to sodiumThis adrenal hormone increases sodium reabsorption while pushing potassium out The stomach releases a hormone that builds hungerGhrelin rises before expected meals and falls again once food arrives Each adrenal gland is two glands in oneAn outer cortex makes steroid hormones and an inner medulla makes adrenaline Steroid hormones slip through cell membranesBeing fat-soluble, they enter cells and switch genes on or off directly Thyroid hormones are built around iodine atomsT4 carries four iodine atoms and T3 carries three, which is why iodine is essential The pineal gland regulates daily sleep rhythms with melatoninLight exposure signals the brain to adjust hormone production for sleep

Tags: calcium, parathyroid, hormones

Four tiny neck glands regulate blood calcium: the short answers

Where does this come from, and can I check it?: Parathyroid hormone raises calcium by acting on bone, kidney and vitamin D. The figure is taken from Endocrine Society, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a human body fact?: Yes. It sits on the Human Body shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.