03-26-2007, 02:21 PM
The absorption of calcium from the intestinal tract results principally from the direct action of which of the following?
A) Calcitonin
B) Cyclic AMP
C) 1,25-Dihydroxycholecalciferol
D) 25-Hydroxycholecalciferol
E) Parathyroid hormone
A) Calcitonin
B) Cyclic AMP
C) 1,25-Dihydroxycholecalciferol
D) 25-Hydroxycholecalciferol
E) Parathyroid hormone