Calcium, magnesium and phosphate metabolism Flashcards
1
Q
What do osteoclasts do
A
Reabsorb bone, releasing Ça, PO4 and degraded collagen
2
Q
What do osteoblasts do
A
Lay down new remodelled bone. Raise alkaline phosphatase
3
Q
What is osteoporosis
A
When bone mineral density falls 2.5 SD below the mean BMD for a young female adult
4
Q
How many women over the age of 50 get osteoporosis
A
15%
5
Q
How much calcium does the kidney filter
A
240 mmol/day
6
Q
How much calcium is lost a day by the kidney
A
6 mmol/day via urine
