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The primary role of the parathyroid gland is:
  • a)
    To maintain metabolic homeostasis
  • b)
    To regulate serum calcium levels
  • c)
    To send hormonal signals to other endocrine organs
  • d)
    To receive hormonal signals from the hypothalamus
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The primary role of the parathyroid gland is:a)To maintain metabolic h...
The parathyroid glands are small endocrine glands located near the thyroid gland in the neck. Their main function is to produce and secrete parathyroid hormone (PTH). PTH plays a vital role in the regulation of calcium and phosphate levels in the body.
When blood calcium levels drop, the parathyroid glands release PTH into the bloodstream. PTH acts on several target organs, including the bones, kidneys, and intestines, to increase blood calcium levels. It stimulates the release of calcium from the bones, enhances calcium reabsorption in the kidneys, and promotes the absorption of calcium in the intestines. PTH also acts on the kidneys to decrease phosphate reabsorption, which indirectly increases serum calcium levels.
Maintaining the appropriate balance of calcium is crucial for various physiological processes, including muscle and nerve function, bone health, and blood clotting. Therefore, the primary role of the parathyroid gland is to regulate serum calcium levels (option B).
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