the skeletal system Flashcards
1
Q
matrix
A
ECM of bones provides protection and support
2
Q
hydroxyapatite
A
hard and brittle, provides strength
3
Q
collagen
A
flexible protein that prevents shattering
4
Q
osteocytes
A
cells of bones, hardended. housed in a lacunae with canaliculi that are filled with blood vessels.
5
Q
osteoblasts
A
cells that excrete osteoid matrix. pull Ca++ into matrix and eventually become osteocytes.
6
Q
osteoclasts
A
breakdown Ca++ in matrix for use. osteolysis- enzyme process.
7
Q
osteoprogenitor
A
in periosteum, divide into new osteoblasts.
