Calcium Flashcards
1
Q
serum total [Ca] is
A
2.15-2.55 mmol/L
2
Q
Structural component of bone
Neuromuscular activity
Coenzyme of coagulation factors
A
Roles of Ca
3
Q
The active form of Ca is
A
free Ca
4
Q
the most important regulator of serum Ca concentrations
A
parathyroid hormone
5
Q
function of parathyroid hormone in bone
A
increases bone resorption and release of Ca and PO4
6
Q
function of PTH in kidney
A
increases Ca reabsorption, decreases PO4 reabsorption, increases 1,25(OH)2D formation
7
Q
function of PTH in intestine
A
increases Ca and PO4 absorption
8
Q
Hypocalcemia
A
hypoparathyroidism
vitamin D deficiency
renal failure
hypoalbuminemia
9
Q
Hypercalcemia
A
1’ hyperparathyroidism
malignancy (PTHrP)
low serum PO4
10
Q
How to measure free calcium
A
Ion selective electrode (ISE)
