Q:

Parathormone

0

 Parathormone.


  1. Decreases the renal clearance of phosphate.
  2. Mobilizes bone calcium independently of its actions on the kidney.
  3. Depresses the activity of the anterior pituitary gland.
  4. In the blood rises when the calcium level falls.
  5. Stimulates the final activation of vitamin D (cholecalciferol) in the kidney.

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A. False It increases it by depressing phosphate reabsorption.

B. True It does so in the absence of the kidneys.

C. False It does not affect the anterior pituitary.

D. True Blood calcium level determines its rate of secretion.

E. True From 25-hydroxy to 1,25-dihydroxycholecalciferol.

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