Ca and PO4 Physiology Flashcards
what effect does PTH (parathyroid hormone) have on Ca and PO4?
increases Ca
decreases PO4
decreased levels of Ca causes what to happen to PTH levels?
increases PTH levels
what effect does PTH have on HCO3 levels ?
decreases
- increases excretion of HCO3
calcitriol production is stimulated by what?
decreased Ca, PO4
increased PTH
what effect does calcitriol have?
increases Ca and PO4 absorption at the gut
decreases PTH release
what effect does magnesium have on Ca?
magnesium prevents PTH release so decreases Ca
what does alkalosis do to the level of Ca?
alkalosis decreases albumin protonation and increases Ca binding so reduces the level of Ca in the serum
what effect does prolonged tourniquet
increases albumin and increases Ca
if albumin decreases what happens to the level of Ca?
Ca also decreases