Q:

A raised level of calcium in the blood (hypercalcaemia)

safaTerkawi
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2022-08-07
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 A raised level of calcium in the blood (hypercalcaemia).

  1. May occur when parathyroid activity decreases.
  2. May occur when the plasma protein level falls.
  3. May occur in chronic renal failure.
  4. Causes increased excitability of nerve and muscle.
  5. Increases the risk of stone formation in the urinary tract.
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safaTerkawi
2022-08-07
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 A. False  This reduces blood calcium.

B. False  This lowers the protein-bound, and hence the total, calcium level.

C. False  In chronic renal failure PO4 retention raises blood PO4 levels; Ca2 levels fall to maintain a constant [Ca2] [PO4 ] product

D. False  It depresses excitability.

E. True  More calcium is filtered and this increases the urinary [Ca2] [PO4 ] solubility product.

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