Body Logistics

Question 1

Compare and contrast red and yellow marrow

Answer 1

Red:
Contains developing blood cells
Rich blood supply
Sinusoids
Spongy bone only
Turns into yellow with age
Function -  haemopoiesis

Yellow:
Contains adipocytes
Poor blood supply
Spongy bone of long bones
Can convert to red marrow (ie early stages of anaemia)
Function - shock absorber & energy source

Question 2

What are the 3 types of cartilage?

Answer 2

Hyaline cartilage
Elastic cartilage
Fibrocartilage

Question 3

What is the predominant fibre type in Hyaline cartilage?

Answer 3

Type II collagen fibres

Question 4

What is the predominant fibre type in Elastic cartilage?

Answer 4

Elastic fibres

Question 5

What is the predominant fibre type in Fibrocartilage?

Answer 5

Type I collagen fibres

Question 6

Why do we lose flexibility with ageing?

Answer 6

Hyaline cartilage at articular surfaces calcifies.

Question 7

Which cartilage type is the least widely distributed and where is it found?

Answer 7

Elastic cartilage

• The pinna of the ear
• The Eustachian tube
• The epiglottis

Question 8

What is the order of events in fracture repair?

Answer 8

1) Haemotoma formation
2) Fibrocartilagenous callus formation
3) Bony callus formation
4) Bone remodelling