Moderate
Vitamin D_____________?
Correct answer: D. Along with PTH, increases calcium resorption from bone
- A. Absorption requires bile pigments
- B. Synthesis is regulated at the reaction catalyzed by 15-hydroxylase
- C. Deficiency on adults leads to rickets
- D. Along with PTH, increases calcium resorption from bone
Explanation
Active vitamin D, together with PTH, increases calcium mobilization from bone when needed to maintain blood calcium. Bile salts rather than bile pigments aid its absorption, and adult deficiency causes osteomalacia rather than rickets.
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