Organ systems: Hi, the parathyroid glands, calcitriol, the skeleton, the kidneys, & the small intestine. Hard to explain in so few characters. PTH designed to keep blood calcium (Ca) UP; it can't prevent high blood calcium. The skeleton is the storage pool of body Ca. The kidney is now we get rid of Ca. The gut brings new Ca (dietary) into the system. PTH regulates calcitriol and Ca, and Ca & calitriol feedback
Answered 7/9/2014
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