Skeletal Cartilage Flashcards
Cartilage is mostly made up of what …?
Water
Accounts for its resilience.
Made of some variety of cartilage tissue, which is molded to fit its body location and function.
Skeletal tissue
“Around the cartilage”
Perichondrium
What is the function of the Perichondrium ?
Acts as a girdle to resist outward expansion when cartilage is compressed.
Also contains blood vessels from which nutrients diffuse through matrix to reach cartilage cells internally.
Limits thickness
Layer of Dense irregular connective tissue which surrounds cartilage
Perichondrium
Name 3 types of cartilage in the body
Hyaline cartilage
Elastic cartilage
Fibrocartilage
What are the basic components of cartilage?
- ) chondrocytes
- ) encased in lacunae within extracellular matrix containing ground substance
- ) fibers
Type of cartilage that looks like frosted glass when freshly exposed.
Hyaline cartilage
What is the function of hyaline cartilage?
Provides support with flexibility and resilience.
Which type of cartilage is the most abundant?
Hyaline cartilage
What are the characteristics of hyaline cartilage?
Chondrocytes are spherical
Only fiber in matrix is fine collagen fiber
List the types of hyaline cartilages
Articular
Costal
Respiratory
Nasal
Where would articular cartilages be found?
Covering the ends of most bones at movable joints
Where would costal cartilage be found?
Connecting ribs to sternum
Where would respiratory cartilage be found?
Forms skeleton of the larynx and reinforces other respiratory passageways
Where would nasal cartilage be found?
Supporting external nose
Type of cartilage that resembles hyaline cartilage, but can stand up to repeated bending.
Elastic cartilage
What allows elastic cartilage to be more flexible than hyaline cartilage ?
Elastic fibers
Found in external ear and epiglottis.
Elastic cartilage.
Type of cartilage that is highly compressible with treat tensile strength.
Consists of two rows of parallel chondrocytes alternating with thick collagen fibers.
Fibrocartilage
Found in meniscus of the knee and discs between vertebrae.
Fibrocartilage
Two ways cartilage grows?
Appositional growth
Interstitial growth
Define apposition all growth
Growth from outside.
Cartilage-forming cells in Perichondrium secrete new matrix against external face of the existing cartilage tissue.
Define interstitial growth
Growth from inside.
The lacunae-bound chondrocytes divide and secrete new matrix, expanding the cartilage within.
When does cartilage growth typically end?
During adolescence, when the skeleton stops growing.
