What does parathyroid hormone mean?

Definitions for parathyroid hormone
parathy·roid hor·mone

This dictionary definitions page includes all the possible meanings, example usage and translations of the word parathyroid hormone.

Princeton's WordNet

  1. parathyroid hormone, parathormonenoun

    hormone synthesized and released into the blood stream by the parathyroid glands; regulates phosphorus and calcium in the body and functions in neuromuscular excitation and blood clotting


  1. Parathyroid hormone

    Parathyroid hormone (PTH), also called parathormone or parathyrin, is a peptide hormone secreted by the parathyroid glands that regulates the serum calcium concentration through its effects on bone, kidney, and intestine.PTH influences bone remodeling, which is an ongoing process in which bone tissue is alternately resorbed and rebuilt over time. PTH is secreted in response to low blood serum calcium (Ca2+) levels. PTH indirectly stimulates osteoclast activity within the bone matrix (osteon), in an effort to release more ionic calcium (Ca2+) into the blood to elevate a low serum calcium level. The bones act as a (metaphorical) "bank of calcium" from which the body can make "withdrawals" as needed to keep the amount of calcium in the blood at appropriate levels despite the ever-present challenges of metabolism, stress, and nutritional variations. PTH is "a key that unlocks the bank vault" to remove the calcium. PTH is secreted primarily by the chief cells of the parathyroid glands. The gene for PTH is located on chromosome 11. It is a polypeptide containing 84 amino acids, which is a prohormone. It has a molecular mass around 9500 Da. Its action is opposed by the hormone calcitonin. There are two types of PTH receptors. Parathyroid hormone 1 receptors, activated by the 34 N-terminal amino acids of PTH, are present at high levels on the cells of bone and kidney. Parathyroid hormone 2 receptors are present at high levels on the cells of central nervous system, pancreas, testes, and placenta. The half-life of PTH is about 4 minutes.Disorders that yield too little or too much PTH, such as hypoparathyroidism, hyperparathyroidism, and paraneoplastic syndromes can cause bone disease, hypocalcemia, and hypercalcemia.


  1. parathyroid hormone

    Parathyroid hormone is a hormone produced and released by the parathyroid glands, which are four small glands located in the neck, behind the thyroid. This hormone regulates the levels of calcium and phosphorus in the body by increasing the reabsorption of calcium by the kidneys, increasing the absorption of calcium and phosphorus from food in the intestines, and breaking down the bones to release these minerals into the bloodstream. Abnormal levels of parathyroid hormone can result in various disorders, including osteoporosis, kidney stones and hyperparathyroidism.


  1. Parathyroid hormone

    Parathyroid hormone, parathormone or parathyrin, is secreted by the chief cells of the parathyroid glands as a polypeptide containing 84 amino acids. It acts to increase the concentration of calcium in the blood, whereas calcitonin acts to decrease calcium concentration. PTH acts to increase the concentration of calcium in the blood by acting upon the parathyroid hormone 1 receptor and the parathyroid hormone 2 receptor. PTH half-life is approximately 4 minutes. It has a molecular mass of 9.4 kDa.

U.S. National Library of Medicine

  1. Parathyroid Hormone

    A polypeptide hormone (84 amino acid residues) secreted by the PARATHYROID GLANDS which performs the essential role of maintaining intracellular CALCIUM levels in the body. Parathyroid hormone increases intracellular calcium by promoting the release of CALCIUM from BONE, increases the intestinal absorption of calcium, increases the renal tubular reabsorption of calcium, and increases the renal excretion of phosphates.

Editors Contribution

  1. parathyroid hormone

    A type of natural hormone created in moderation within the body of a human being.

    Parathyroid hormone regulates calcium in the body.

    Submitted by MaryC on September 6, 2020  

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  1. Chaldean Numerology

    The numerical value of parathyroid hormone in Chaldean Numerology is: 8

  2. Pythagorean Numerology

    The numerical value of parathyroid hormone in Pythagorean Numerology is: 7


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"parathyroid hormone." Definitions.net. STANDS4 LLC, 2023. Web. 7 Dec. 2023. <https://www.definitions.net/definition/parathyroid+hormone>.

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