Bone Growth Flashcards
What is ossification?
The process of bone replacing both mesenchyme and cartilage.
What is calcification?
The deposition of calcium salts within a tissue.
What are the two forms of ossification?
- Intramembranous (dermal). 2. Endochondral.
What is intramembanous ossification aka dermal ossification?
Bone develops from mesenchyme or fibrous connective tissue.
What kind of bones does intramembanous ossification result in?
Membrane or dermal bones, such as the clavicle, mandible, and flat bones of the face and skull.
What is endochondral ossification?
When bone replaces cartilage within a hyaline cartilage model.
What are pneumatized bones?
Bones that are hollow or contain numerous air pockets, such as the ethmoid bones.
What is a tubercle?
A small, rounded projection.
What is a tuberosity?
A rough projection.
What are the two kinds of depressions?
- Sulcus. 2. Fossa.
What is a sulcus?
A narrow groove.
What is a fossa?
A shallow depression.
What are the four steps of Intramembranous Ossification?
Differentiation of Osteoblasts within Mesenchyme. 2. Formation of bony spicules. 3. Entrapment of blood vessels. 4. Formation of spongy (trabecular) bone.
What is an ossification center?
Where ossification begins.
What is the epiphyseal plate also known as?
Epiphyseal cartilage.
