| A | B |
|---|
| harmful substances in the air | air pollution |
| pockets at the end of the bronchial tubes | alveoli or air sacs |
| 2 large branches that connect the windpipe to the lungs | bronchial tubes |
| Tiny hairs that move substances along | cilia |
| large muscles attached to the bottom of lungs used in breathing | diaphragm |
| cartilage that covers the windpipe when swalloing | epiglottis |
| voice box | larynx |
| sponge like organs used in breathing | lungs |
| sticky fluid in the lining of your nose | mucus |
| The system that includes the nose, mouth, and lungs | Respiratory System |
| Windpipe (main air tube) | Trachea |
