A 50-year-old man has low serum calcium and high serum phosphate levels. His urinary cAMP levels are low. He most likely suffers from: a. Hypoparathyroidism b. Hyperparathyroidism c. Vitamin D...

A 50-year-old man has low serum calcium and high serum phosphate levels. His urinary cAMP levels are low. He most likely suffers from:

a.      Hypoparathyroidism

b.      Hyperparathyroidism

c.      Vitamin D deficiency

d.      Cushing’s syndrome

Bone loss associated with renal failure occurs because:

a.      the failing kidney is no longer capable of PTH production

b.      renal phosphate clearance decreases in renal failure

c.      the failing kidney increases activation of vitamin D

d.      renal calcium clearance increases in renal failure