What triggers the release of calcitonin and PTH?
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Also, what triggers the release of calcitonin?
When the calcium level is high in the bloodstream, the thyroid gland releases calcitonin. Calcitonin slows down the activity of the osteoclasts found in bone. This decreases blood calcium levels. When calcium levels decrease, this stimulates the parathyroid gland to release parathyroid hormone.
Secondly, what type of stimuli causes the release of calcitonin and PTH? Low blood calcium levels cause the production and secretion of PTH. In contrast, elevated blood calcium levels inhibit secretion of PTH and trigger secretion of the thyroid hormone calcitonin.
Similarly one may ask, what stimulates the release of PTH?
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. There are two types of PTH receptors.
Which effects are a result of calcitonin release?
Function. More specifically, calcitonin lowers blood Ca2+ levels in two ways: Major effect: Inhibits osteoclast activity in bones, which break down the bone. Minor effect: Inhibits renal tubular cell reabsorption of Ca2+ and phosphate, allowing them to be excreted in the urine.