Bone Formation Flashcards
1
Q
What is ossification?
A
The process of bone formation
2
Q
What are the steps of ossification?
A
- Begins as an embryo
- First 8 weeks: fibrous membranes and hyaline cartilage forms
- Bones grow until early adulthood (~25 years)
- Bones remodel during adulthood
3
Q
Mesenchymal cell
A
Origin cell
4
Q
Osteoblast
A
Immature bone cell
5
Q
Osteocyte
A
Mature bone cell
6
Q
Compact bone
A
Bone is dense and hard
7
Q
Spongy bone
A
Bone is porous with trabeculae
8
Q
Trabeculae
A
Bone has random spurts within spongy bone
9
Q
Osteoid
A
building material (bone making)
10
Q
Red marrow
A
material (bone making)
11
Q
What are the types of ossification?
A
- Intramembranous ossification
2. Endochondral ossification
12
Q
Where does intramembranous ossification occur and what does it create?
A
Occurs in a fibrous membrane and creates all flat bones
13
Q
Where does endochondral ossification occur and what does it create?
A
Occurs in hyaline cartilage model and creates all bones, excluding flat bones
