Answered

What happens when blood calcium is high?

A. The thyroid gland releases a hormone called calcitonin.
B. The parathyroid gland produces more parathyroid hormone (PTH).
C. Calcium resorption from bone increases.
D. Less calcium is lost in urine.
E. The skin absorbs more vitamin D from the sunlight.



Answer :

GinnyAnswer

Final answer:

Calcitonin is released to lower blood calcium levels when they are high.


Explanation:

When blood calcium levels become too high, the thyroid gland is stimulated to release calcitonin, which inhibits osteoclast activity in bones, increases calcium uptake, and decreases reabsorption of calcium by the kidneys. All these actions work to lower blood calcium levels back to normal.


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