- 1(current)
Q. No.All the following statements regarding parathyroid hormone are correct except:
1. It is a peptide hormone
2. It is regulated by a tropin secreted by anterior pituitary
3. It stimulates the process of bone resorption or demineralization
4. It stimulates calcium absorption from the digested food
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All the following regarding parathyroid glands are true except:
1. They usually include four small glands.
2. They are embedded in the posterior surfaces of the lateral lobes of the thyroid gland.
3. They secrete parathyroid hormone and calcitonin.
4. They play a critical role in calcium homeostasis.
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Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency?
| 1. Relaxin-Gigantism | 2. Prolactin-Cretinism |
| 3. Parathyroid hormone-Tetany | 4. Insulin-Diabetes insipidus |
I: PTH is a hypercalcaemic hormone.
II: PTH stimulates reabsorption of calcium by the renal tubules.
1. Both I and II are correct
2. Both I and II are incorrect
3. I is correct but II is incorrect
4. I is incorrect but II is correct
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I: In bone, PTH enhances the release of calcium from the large reservoir contained in the bones.
II: In the kidney, PTH stimulates reabsorption of calcium but inhibits the reabsorption of phosphate \((HPO^{2-}_4)\) from the tubular fluid.
III. It activates vitamin D, which in turn enables intestinal epithelium to absorb calcium.
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
- 1(current)
Q. No.
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