Exam #2: Cartilage Flashcards
1
Q
Hyaline Cartilage
A
- Most common type of cartilage
- “Glassy” appearance
- Fine & delicate collagen fibrils
- Also called articular cartilage; allows free movement between articulating bones
2
Q
Elastic Cartilage
A
- Collagen & Elastic fibers
3
Q
Fibrocartilage
A
- Thick bundles of collagen
4
Q
Where is Hyaline (articular) cartilage found?
A
- Where it maintains a lumen: Trachea, Nostrils, Bronchi, Larynx
- Articular surface of bone: Femur, Costochondral Joints, Sternocostal Joints
- Epiphyseal Plates
5
Q
Mesenchyme
A
Embryonic connective tissue that has the potential to differentiate into different types of tissue
6
Q
Chondroblast
A
- Mesenchymal cells that retract their processes & become more rounded
- Synthesize ECM
- Monitor the ECM & synthesize as needed
7
Q
Chondrocyte
A
- A Chondroblast that has completely surrounded itself in ECM & undergoes division
- Continue to synthesize ECM (Interstitial Growth)
8
Q
Isogenous Groups
A
Genetically uniform cells that arise from one parent cell
9
Q
Perichondrium
A
- Membrane that surrounds cartilage
- Maintains the fitness of cartilage
- Derived from mesenchyme that has differentiated into fibroblasts
10
Q
How many layers does the perichondrium have?
A
Two:
1) Outer
2) Inner
11
Q
Outer Layer of the Perichondrium
A
- Fibrous layer that is protective & supportive
- Contains fibroblasts that synthesize collagen
- Also contains blood vessels, lymphatic vessels, & nerves
12
Q
Inner Layer of the Perichondrium
A
- Cellular layer that allows for cartilage growth
- Contains chondrogenic cells that become chondroblasts & later chondrocytes
- NO blood vessels or nerves
13
Q
Interstitial Growth
A
Growth/expansion from within cartilage
14
Q
Appositional Growth
A
Growth from the surface of cartilage
15
Q
In what two locations is cartilage not covered by perichondrium?
A
1) Articular surface of bone
2) Epiphyseal plates
