Bone Metabolism Flashcards
1
Q
What is the inorganic material in bone and what percentage of bone is made up of it?
A
Calcium hydroxyapatite and it makes up 60% of bone
2
Q
What do osteoclasts do?
A
Release enzymes and acids to break down bone so it can be resorbed.
3
Q
What do osteoblasts do?
A
Lay down new bone
4
Q
What are the 5 stages of bone remodelling?
A
1) Quiescence
2) Resorption
3) Reversal
4) Formation
5) Mineralisation
5
Q
What happens in the reversal stage of bone remodelling?
A
There is a switch from absorption to formation so osteoblasts are stimulated.
6
Q
How much calcium is in the adult human body on average?
A
1000g
7
Q
What is the recommended daily intake of calcium?
A
1000mg
