When Blood Ca²⁺ Levels Fall Below Normal,in What Ways Do

question 34

Multiple Choice

When blood Ca²⁺ levels fall below normal,in what ways do the kidneys help restore them toward normal?

• A)by increasing 1,25-dihydroxyvitamin D3 formation,decreasing tubular phosphate reabsorption,and increasing tubular Ca²⁺ reabsorption
• B)by increasing 1,25-dihydroxyvitamin D3 formation,increasing tubular phosphate reabsorption,and increasing tubular Ca²⁺ reabsorption
• C)by decreasing 1,25-dihydroxyvitamin D3 formation,increasing tubular phosphate reabsorption,and increasing tubular Ca²⁺ reabsorption
• D)Increasing 1,25-dihydroxyvitamin D3 formation and increasing secretion of parathyroid hormone
• E)by increasing renal secretion of parathyroid hormone and increasing bone resorption

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