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| Q. |
Regarding calcium metabolism: |
| A. | approximately 60% of filtered calcium is reabsorbed by the kidney |
| B. | absorption of calcium in the gastrointestinal tract is mainly by passive diffusion |
| C. | the extent of Ca++ binding by plasma proteins is inversely proportionate to the plasma protein level |
| D. | levels of 1,25-dihydroxycholecalciferol fall in the presence of increased plasma Ca++ |
| E. | the majority of calcium present in bone is readily exchangeable |
| Answer» D. levels of 1,25-dihydroxycholecalciferol fall in the presence of increased plasma Ca++ | |
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