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NEET2026BiologyChapterActual

Read the following statements regarding Parathyroid Hormone (PTH): (a) It is a peptide hormone. (b) Its secretion is regulated by the circulating levels of calcium ions. (c) It is a hypocalcemic hormone. (d) It inhibits the dissolution or demineralisation of bones. (e) Along with TCT, it plays a significant role in calcium balance in the body. Which of the statements given above are correct?

Options

  1. A(a), (b) and (e) only
  2. B(a), (c) and (d) only
  3. C(b), (d) and (e) only
  4. D(c), (d) and (e) only

Correct answer

A. (a), (b) and (e) only

Step-by-step solution

Parathyroid hormone (PTH) is a peptide hormone secreted by the parathyroid glands. Its secretion is regulated by the circulating levels of calcium ions in the blood. PTH is a hypercalcemic hormone, meaning it increases blood calcium levels. It achieves this by stimulating the process of bone resorption, which involves the dissolution or demineralisation of bones. Therefore, statements (c) and (d) are incorrect. PTH, along with Thyrocalcitonin (TCT), plays a significant role in maintaining calcium balance in the bod

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