Would you expect to see changes in blood levels of the hormones calcitonin and PTH as a result of vitamin D3 deficiency? Explain
What will be an ideal response?
A person deficient in vitamin D3 would not be able to absorb calcium effectively from the digestive tract, leading to a shortage of calcium in the blood. To maintain homeostasis, the decrease in blood calcium would trigger the release of PTH. The PTH, in turn, would stimulate osteoclasts to release enough calcium from the bone to maintain proper calcium levels in the blood. Levels of calcitonin would decrease, because release of this hormone is triggered by high blood calcium levels.
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Fill in the blank(s) with correct word