When circulating calcium levels are too high, production of parathyroid hormone is inhibited.
There are four parathyroid glands in the neck, behind the thyroid, which are tiny glands that emit the hormone parathyroid. The main way that parathyroid hormone controls blood calcium levels is by raising them when they are too low. This is accomplished by the way it affects the colon, bones, and kidneys.
The basic mechanism controlling parathyroid hormone is the parathyroid glands' negative feedback from blood calcium levels. High calcium levels in the blood restrict the release of parathyroid hormone, while low calcium levels in the blood encourage the secretion of parathyroid hormone.
I understand the question you are looking for is this:
When circulating _____ levels are too high, the production of parathyroid hormone would be _____.
A. glucose; inhibited
B. calcium; inhibited
C. calcium; stimulated
D. cortisol; inhibited
E. glucose; stimulated
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