6.2 Cartilage
interstitial growth
chondrocytes in the center of the tissue divide and add more matrix in-between the existing cells
collagen and proteoglycan
the matrix contains ___ and ___
hyaline cartilage, fibrocartilage, elastic cartilage
three types of cartilage
-blast
"seed" or "bud"
perichondrium
- protective connective tissue sheath that covers most cartilage - double-layered outer layer of dense irregular connective tissue containing fibroblasts
lacuna
a rounded cell that occupies a space within the matrix
appositional growth
chondroblasts in the perichondrium add new cartilage to the outside edge of the existing cartilage
chondrocyte
by the time the matrix has surrounded a chondroblast, the cell has differentiated into a ___
hyaline cartilage
cartilage mostly associated with bone
articular cartilage
hyaline cartilage that covers the ends of bones where they come together to form joints, has no perichondrium, blood vessels, or nerves
proteoglycan
makes cartilage resilient by trapping water
-blast to -cyte
once the immature cell has grown and differentiated into its mature form (suffix change)
hyalin cartilage chondroblast
produces a matrix surrounding themselves
collagen
provides cartilage strength
appositional growth and interstitial growth
two types of cartilage growth