Cartilage Flashcards
1
Q
5 Key points of cartilage?
A
- avascular and flexible
- type II collagen
- slow continuous growth
- diffuse nutrients
- calcify matrix at death
2
Q
3 Functions of cartilage?
A
- model for bone development
- absorbs shock in joints
- smooth articulating surfaces
3
Q
3 Types of cartilage?
A
hyaline (most)
elastic
fibrocartilage (with DRCT)
4
Q
Cartilage composition?
A
water
collagen (type II)
proteoglycans and glycoproteins
5
Q
What is a cartilage cell called and found in?
A
chondrocyte (extreme basophillic - sulfated GAGs)
isogenous group
6
Q
4 Layers of cartilage growth?
A
- fibrous perichondrium (type I collagen)
- chondrogenic perichondrium (secrete cartilage matrix)
- appositional growth (chondrocytes divide and add ECM outside cartilage)
- interstitial growth (chondrocytes divide within)
7
Q
What is a lacunae?
A
space in cartilage matrix with chondrocyte
8
Q
Hyaline cartilage location, function, chondrocytes?
A
- trachea, nose, epiphyseal plate of long bones
- shape, flexibility, smooth surface for joints, model for bone development
- isogenic groups
9
Q
Articular cartilage function and characteristic?
A
contact between bones
- no perichondrium = no blood (synovial fluid)
10
Q
Elastic cartilage location, function, chondrocytes?
A
- epiglottis, larynx, ear
- shape and elasticity
- isogenous groups within elastic fibers + type II collagen
11
Q
Fibrocartilage location, function, chondrocytes?
A
- articular disk, intervertebral disk, pubic symphysis
- resistance to compression + tension
- parallel rows within type I + II collagen (dRCT)
