Across
- 1. tubes, One leads to the left lung, the other to the right lung.
- 2. chronic respiratory condition that causes difficulty breathing due to inflammation of the airways.
- 4. bronchi branches off into smaller tubes
- 6. breathing
Down
- 1. respiratory disease caused by a defective gene that creates thick and sticky mucus that clogs up tubes and passageways.
- 3. tiny sacs (air sacs)
- 5. a pair of organs found in all vertebrates.