Combined ScienceCode 5129
Human gas exchange
What this topic asks you to be able to do
- state and account for the ways in which inspired air and expired air differ
- identify, using diagrams and pictures, the larynx, trachea, lungs, bronchi, bronchioles, alveoli and the capillaries linked to them
- state that oxygen moves into the blood, and carbon dioxide moves out of the blood, across the alveoli, and that both of these transfers happen by diffusion
- Investigate and explain how physical activity affects breathing, in both its rate and its depth