Bone Flashcards
(22 cards)
Function of bones
Mobility
Ca reservoir
Support
Protection
Connective tissue is composed of?
CT cells
CT fibers
Ground substance
Also known as osteoprogenitor cells
Osteocytes
Macrophage-monocyte line
Osteoclast
Cells of bones
Osteoblast
Osteocyte
Osteoclast
Types of bone
Compact
Cancellous
Forms of bone
Woven
Lamellar
Form of bone?
Has random fibers and immature
Woven
Form of bone?
Has parallel bands of fibers
Lamellar
Composition of the Haversian system
HOLaCa C V
Haversian canal Osteocyte Lacuna Canaliculi Concentric lamellae Volkmann's canal
Composed of cells & predominantly collagenous ECM called osteoid
Bone
The collagenous extracellular matrix of the bone is called?
Osteoid
Composition of osteoid
Type I collagen
Ca
PO4
Bone becomes mineralized by deposition of?
Ca Hydroxyapatite
Gives the bone considerable rigidity and strength
Ca Hydroxyapatite
Hardest tissue of the body
Bone
Composition of bone
H2O - 20%
Organic materials - 30-40%
Inorg materials - 40-50%
Organic composition of the bone
Bone cells
Matrix / ground substance
Inorganic composition of the bone
Ca
Phosphorus
What type of collagen makes up the bone?
Type I
95% of the organic composition of the bone
Collagen
Collagen is from
A. Endoplasmic reticulum
B. Nucleus
C. Golgi Apparatus
D. Cell membrane
A. Endoplasmic Reticulum
