| A | B |
|---|
| Windpipe | Trachea |
| Where gaseous exchange takes place | Alveoli |
| What happens to the volume of the lungs when inhaling | Increases |
| What happens to the volume of the lungs when exhaling | Decreases |
| Make the ribs move during breathing | Intercostal muscles |
| Muscle that changes the volume of air in the lungs | Diaphragm |
| Gas we need for respiration | Oxygen |
| Waste gas that needs to be expelled from the lungs | Carbon dioxide |
