Joints & types of ossification
Appositional growth
compact bone thickens and strengthens along long bones with layers of circumferential lamellae
Primary ossification center
fibroblasts migrate to bone center and differentiate into osteoblasts to create the...
Syndesmosis
fibrous, bones connected to ligaments, distal end of tibia and fibula
Synostosis
fused bones, immovable, metopic suture of skull between two halves of frontal bone, epiphyseal lines of long bones
synarthroses
immovable joints
Endochondrial Ossification
ossifies bone that originates as hyaline cartilage
Intramembranous ossification
produces dermal bones such as mandible and clavicle, flat bones in the skull, occurs in dermis
Amphiarthroses
slightly movable joints
epiphyseal lines
when long bones stop growing after puberty
Syndesmosis, symphysis
2 types of amphiarthroses
Suture, Gomphosis, Synchondrosis, Synostosis
4 types of synarthroses
Secondary ossification center
Center of epiphysis calcify, capillaries and osteoblasts enter area forming the...
Gomphosis
Fibrouis connection (periodontal ligament), binds teeth to sockets
Suture
Fibrous joint , only in skull, bound by dense fibrous connective tissue
appositional growth
bone growth occurs to the outer surface
Synchondrosis
cartlaginous , epiphyseal cartilage of long bones, between vertebrosternal ribs and sternum
Symphysis
cartlaginous, bones seperated by fibrocartilage, pelvic bones, allows flexibility
appositional growth
causes enlargement of medullary cavity as bone gets larger in diameter
