Q. Regarding 1,25 dihydroxycholecalciferol (calcitriol): (Solved)
1. it is formed by the action of sunlight on pre vitamin D3
2. it exerts its action via stimulation of adenylcyclase
3. it decreases calcium reabsorption from kidneys
4. its formation is increased with elevated plasma Ca++ levels
5. it causes increased formation of calbindin-D proteins
- e. it causes increased formation of calbindin-D proteins