Component One - The Human Body and Movement in Physical Activity and Sport
Component Two - Socio-Cultural Influences and Well Being

The Lungs & Gas Exchange

The respiratory system has two main jobs:

  • Deliver oxygen to our muscles
  • Take away the waste product carbon dioxide

The Lungs

During Exercise


Quick-Fire Questions

1. Diffusion occurs at the site of the alveoli and at the site of the muscle tissue? Why does diffusion occur?

Question 1 of 5


The alveoli are tiny air sacs found in the lungs. What are the alveoli surrounded by?

Question 2 of 5


What is the orange arrow pointing to?

Question 3 of 5


What is being shown by the blue arrow?

Question 4 of 5


Which muscles help with the mechanics of breathing during exercise?

Question 5 of 5