Endocrine System and Hormones · Zoology

Which hormone regulates calcium levels by promoting bone resorption?

  1. Calcitonin (thyroid C-cells)
  2. Parathyroid hormone
  3. Vitamin D (calcitriol form)
  4. Thyroxine (T4 hormone)
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Correct answer: Parathyroid hormone

Parathyroid hormone increases blood calcium levels by promoting bone resorption. It acts antagonistically to calcitonin.

Difficulty: Medium Question 13 of 20

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