| Bone
Homeostasis |
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| parathyroid
hormone - primary hormone in calcium |
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| homeostasis. Responds to i
blood calcium |
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| 1) increased Vitamin D3 production. Without this |
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| vitamin
calcium is not absorbed to any great degree. |
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| 2)
increased reabsorption of calcium in the kidney. |
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| 3)
resorption of bone. PTH increases osteoclastic activity |
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| to
release calcium into the blood. This is the last resort |
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| for increasing
blood calcium |
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