Flashcards in Ossification Deck (34):
What are the 2 types of ossification?
What bones are formed by intramembranous ossification?
- most cranial bones
What is the 1st type of bone cell in IO?
In the 1st step of IO, what do mesenchymal cells do?
1st Step of IO: What do mesenchymal cells differentiate into?
1st Step of IO: What is the term for the site of cluster?
1st Step of IO: What do osteoblasts secrete?
2nd Step of IO: What do osteoblasts differentiate into?
2nd Step of IO: What process occurs which involves the hardening of the extracellular matrix?
2nd Step of IO: What mineral is deposited?
3rd Step of IO: What T is formed?
3rd Step of IO: Trabeculae fuse together to form what type of bone?
3rd Step of IO: Connective tissue associated with blood vessels in the trabeculae differentiates into ?
Red bone marrow
4th Step of IO: What is formed at the edge of the bone from mesenchyme?
What types of bone are formed using intramembranous ossification?
4th Step of IO: What type of bone tissue replaces the spongy bone, only at the surface?
4th Step of IO: What type of bone tissue remains in the middle of the bone?
4th Step of IO: What type of bone cell is used to destroy and reform the bone?
Which types of bones are formed by Endochondral Ossification?
1st Step of EO: What do mesenchymal cells differentiate into?
1st Step of EO: what do chondroblasts secrete?
cartilage extracellular matrix
1st Step of EO: What does the cartilage model mostly consist of?
2nd Step of EO: Once chondroblasts are deeply buried in the matrix, what are they called?
2nd Step of EO: How does growth of the cartilage model occur?
Cell division of chondrocytes
2nd Step of EO: What process occurs?
2nd Step of EO: Why do some chondrocytes begin to die?
Nutrients cannot diffuse through the matrix
2nd Step of EO: What are the spaces called which are left due to the dead chondrocytes?
3rd Step of EO: What develops in the diaphysis of the bone?
Primary ossification centre
3rd Step of EO: What replaces most of the cartilage?
4th Step of EO: What bone cells break down the bone to form the medullary cavity?
4th Step of EO: What is most of the wall of the diaphysis replaced with?
5th Step of EO: What develops in the epiphysis of the bone?
Secondary Ossification centre
6th Step of EO: What 2 things are formed:
- Epiphyseal plate
- Articular cartilage