Bone And Cartilage

Question 1

What are the four main functions of the skeleton and its component bones?

Answer 1

1) protection of major organs
2) forming the mechanical basis for movement
3) Haemopoesis: erythrocytes and B lymphocytes are made in the bone marrow
4) Storage of salts in bone

Question 2

What are the two different types of bones?

Answer 2

Compact bone- strong and dense, all the bones in the body have a superficial, thin layer of it
Spongy bone- less dense with numerous air spaces, forms the core of most bones.

Question 3

How does cartilage obtain nutrients and oxygen?

Answer 3

Diffusion

Question 4

What are the three types of Cartilage?

Answer 4

Hyaline cartilage, fibrocartilage and elastic cartilage

Question 5

What is Hyaline Cartilage?

Answer 5

The most widely present type of cartilage in the body. It is present in adults as articular cartilage in joints and in the respiratory system as support for the airways (trachea)

Question 6

What is fibrocartilage?

Answer 6

This is found in articular discs within joints, in invertebral discs and around the edge of ball and socket joints to enlarge the surface area of the socket. This type is tougher than hyaline cartilage.

Question 7

What is elastic cartilage?

Answer 7

This is highly resiliant due to the elastic fibres contained in its structure. We find this in the external ear, auditory tube, epiglottis and parts of the larynx.