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5 Cards in this Set

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How does PTH work?
1) Activates osteoclasts to increase resorption of mineralized bone, resulting in mobilization of calcium and phosphorus.
2) PTH activates the proximal and distal tubular cells in the kidney to promote resorption of calcium and to inhibit resorption of phosphorus.
3) PTH stimulates the production of 1-alpha,25-dihydroxyvitamin D in the kidney.
How much extracellular calcium is unbound?
50%
What is the most important regulator of physiologic processes?
Unbound calcium
What happens to albumin-bound calcium in acidosis?
Acidosis decreases the calcium binding capacity of albumin
What happens to free extracellular calcium in acidosis?
increased