Daily dietary ingestion of calcium is necessary because
a. Calcium is excreted in the urine and feces
b. Calcium is needed to ensure cardiac health
c. Most of the body's calcium is stored in the teeth and bones
d. All of the above
D
Daily calcium (1 g/day) is needed because calcium is stored in bone and teeth and not readily available. Calcium is excreted in the urine and feces. A lack of calcium causes dysrhythmias.
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