KROK 1 2015 – Question 92 · KROK (Medicine) · Biological Chemistry
A 4 year old child with hereditary renal lesion has signs of rickets, vitamin D concentration in blood is normal. What is the most probable cause of rickets development?
- A. Impaired synthesis of calcitriol
- B. Increased excretion of calcium
- C. Hypofunction of parathyroid glands
- D. Lack of calcium in food
- E. Hyperfunction of parathyroid glands
Hint
Vitamin D itself is normal, so ask what must still happen to it before it can act on bone, and what the damaged organ contributes to that step.
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