1. Where does air enter the respiratory system?
2. What is another name for the trachea?
3. What is another name for the pharynx?
4. How many bronchial tubes branch off into the lungs?
5. Which organ controls breathing?
6. What gas is removed by the cat's lungs?
7. What are the smallest tubes that carry oxygen?
8. What gas is taken in by the lungs in order to provide this gas to the rest of the cat?
9. What tube connects to the bronchial tubes?
10. How many lungs are in a normal cat?