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What are the major inorganic elements in the human body?
Calcium and Phosphorous
where are Calcium and Phosphorous stored the most and how much of it is stored there?
bone; has 95% of body Ca and 90% of body Pi
Where is Calcium stored mainly in the body?
bones
what are the 2 structural components of the bone?
Cortical bone (solid bone; 80% of weight) and Trabecular bone (spongy bone; 20% of weight)
what is calcium balance?
In young adults, the amount of calcium taken in is equal to the amount excreted (daily intake = daily loss).
what can lead to negative calcium balance?
Immobilization
Bed rest
Weightlessness
Disease
the bone crystal is calcium hydroxy apatite, what does that mean?
theres phosphorus and calcium inside
osteoblast
Bone forming cells (builders)
osteoclast
Bone cutting cells
osteocytes
Housekeeping bone cells
osteoprogenitor cells
precursor to osteoblast
chondrocytes
cartilage cells
Where does calcium homeostasis occur?
kidney, bone and intestine