Across
- 2. The ..... membrane allows the lungs to move easily during ventilation
- 8. Letting air out of the lungs
- 9. Tube which leads from the trachea to each lung
- 10. Tiny hairs which move in a wavelike motion to remove dust and dirt
- 12. Filters the air we inhale and branches into the bronchi
- 13. Located at the back of the nose and mouth. Carries both food and air
- 14. The process of which a substance moves from a high concentration to a low concentration
Down
- 1. Muscle located under the lungs
- 3. Tiny sacs within the lungs where gaseous exchange occurs
- 4. Taking air into the lungs
- 5. Main organ of the respiratory system
- 6. Otherwise known as the voice box
- 7. Bone structure which protects the heart and lungs
- 11. A substance that warms and moistens the air as well as trapping foreign substances