S8 Cartilage

Question 1

What are the three types of cartilage?

Answer 1

1. Hyaline cartilage
2. Elastic cartilage
3. Fibrocartilage

Question 2

Where do you find hyaline cartilage?

Answer 2

1. Hyaline - ribcage, bronchi, trachea, larynx

2. Hyaline articular - between joints/ends of long bones

Question 3

Where do you find elastic cartilage?

Answer 3

Pinna of ear, epiglottis and Eustachian tube

Question 4

Where do you find fibrocartilage?

Answer 4

Intervertebral discs and temporomandibular joint

Question 5

What are the extracellular components of cartilage?

Answer 5

1. In the ECM - hyaluronic acid (GAG) and proteoglycans

2. Collagen and elastic fibres

Question 6

What is the main and only (in hyaline and elastic) cell in cartilage?

Answer 6

Chondrocytes (only in mature cartilage)

Chondroblasts before

Question 7

What other cell is present in fibrocartilage?

Answer 7

Fibroblasts

Question 8

Which type of collagen do each 3 cartilage types contain?

Answer 8

1. Hyaline - collagen 2
2. Elastic - collagen 2
3. Fibro - collagen 1

Question 9

What is the function/advantage of fibrocartilage?

Answer 9

Acts as a shock absorber and resits forces - present in areas under directional stress

Question 10

What is the function/advantage of elastic cartilage?

Answer 10

Tough but flexible - allows movement