Across
- 1. A chronic lung condition that causes the airways to narrow
- 5. These tubes carry air deep into the lungs, ending in the alveoli
- 7. This double membrane creates a vacuum seal around the lungs
- 9. The amount of air exhaled after a normal inhalation
- 11. The movement of gases from an area of high concentration to low concentration
- 12. The structure that connects the nasal and oral cavities
Down
- 2. An insect has this type of respiratory system
- 3. The diaphragm and intercostal muscles contract during this process
- 4. This gas is removed from the blood in order to be exhaled
- 6. The flap of tissue that prevents food from entering the trachea
- 8. According to Boyle's law, when when volume increases, this decreases.
- 10. Where the vocal chords are located