The Respiratory System

Question 1

List the parts of the respiratory system:

Answer 1

• nose
  -larynx
• trachea
• lung
• bronchus
• bronchiole
• air sac/alveolus
• diaphram

Question 2

What happens in the bronchiole?

Answer 2

Air we brewthe in and out is passed through this to the alveoli.

Question 3

Functions of the alveoli?

Answer 3

Very thin alveolus wall to give a short distance between air and the blood tonspeed up diffusion. They have a large surface area to increaserates of diffusion. They have a moist surface to make it easier fir the gasses to diffuse and also to prevent inner walls sticking together. They have a capillary network that ensures a good blood supply.

Question 4

What is the role of the capillaries on the alveoli

Answer 4

The contain a good blood supply to maintain a concentration gradient for diffusion.