Question

tomas had low levels of calcium in his body. vitamin d is essential in maintaining a calcium balance. he started taking vitamin d supplements. because tomas took high doses of vitamin d, the calcium levels in his body increased. which endocrine glands will help maintain homeostasis by regulating the increased calcium levels?
adrenal gland, ovary, pancreas, testicle, parathyroid, thyroid (with corresponding images of these glands)

Explanation:

When blood calcium levels rise above normal, the thyroid gland produces calcitonin, a hormone that lowers calcium levels by promoting calcium deposition in bones and reducing calcium absorption in the intestines/kidneys, restoring homeostasis. The parathyroid glands act to raise calcium levels when they are low, so the thyroid is the key gland here for elevated calcium.

Answer:

thyroid