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Biology · PYQ NEET UG 2019(2)

हिन्दी

Which of the following conditions will stimulate parathyroid gland to release parathyroid hormone?

  1. Rise in blood \( \mathrm{Ca}^{+2} \) levels
  2. Fall in active Vitamin D levels
  3. Fall in blood \( \mathrm{Ca}^{+2} \) levels
  4. Fall in bone \( \mathrm{Ca}^{+2} \) levels

Correct answer · Option 3

Fall in blood \( \mathrm{Ca}^{+2} \) levels

Explanation

Parathyroid hormone (PTH) is released in response to a fall in blood calcium levels to restore normal calcium homeostasis.
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