Cartilage and Other Skeletal Tissue
"Around the cartilage"- a surrounding layer of dense irregular connective tissue, acts as a girdle to resist outward expansion when cartilage is subjected to pressure
"Glass" , has frosty glass appearence. Matrix is only collagen fibrils. Provides support through flexability and resilience. Makes up articular cartilage that covers ends of adjoing bones in movable joints, forms cartilaginous attachments of ribs to sternum, most cartilage in respiratory structures, and embryonic skeleton.
|Elastic Cartilage|| |
Matrix is collagen fibrils and elastic fibers, makes up the epiglottis and outer ear. Tolerates repeated bending.
Resists both pulling and pushing forces, consists of rows of thick collagen fibers, make up the annulus fibrosus intervertebral discs, and articular discs of some joints, like meiscus of knee
|Appositional growth|| |
"Growth from the outside", chrondroblasts in periosteum produce new cartilage tissue by actively secreting matrix.
|Interstitial growth|| |
"Growth from within" chrondrocytes within cartilage divide and secrete new matrix.