Cartilage

Question 1

How would you describe the blood supply of cartilage?

Answer 1

Poor; it is avascular

Question 2

What is the perichondrium?

Answer 2

Outer layer
Has a fibrous layer
And inner celular layer
It is VASCULAR

Question 3

What is appositional growth?

Answer 3

Chondroblasts in the perichondrium secrete ECM then move into and become trapped in it

Question 4

What are chondrocytes?

Answer 4

Chondroblasts that have become trapped in ECM

Question 5

What is the composition of the ECM? And why?

Answer 5

Large ratio of GAGs to collagen

Allows diffusion from blood vessels in perichondrium

Question 6

What are the characteristics of hyaline cartilage?

Answer 6

Chondrocytes arranged in groups

Has a perichondrium (except at articular surfaces)

Question 7

What are the characteristics of elastic cartilage?

Answer 7

Addition of elastic fibres

Has a perichondrium

Question 8

What are the characteristics of fibrocartilage?

Answer 8

Combination of dense irregular connective tissue and cartilage
Has fibroblasts
No perichondrium

Question 9

What are some locations of hyaline cartilage?

Answer 9

Articular ends of long bones

Template for endochondral ossification

Question 10

What are some locations of elastic cartilage?

Answer 10

Pinna of ears
Laryngeal cartilage
Eustachian tube

Question 11

What are some locations of fibrocartilage?

Answer 11

Intervertebral discs
Pubic symphsis
Acts as a shock absorber