Which of the following is the best site of absorption of calcium ?
Correct answer: C. Proximal segment of small intestine
- A. Ascending colon
- B. Middle segment of small intestine
- C. Proximal segment of small intestine
- D. Ileum
Explanation
Calcium absorption is greatest in the proximal small intestine, especially the duodenum, where vitamin D-dependent transport is active. The ileum absorbs calcium less efficiently.
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