Respiratory System

Across

1. Lung airway.
4. Voice box.
7. Lung infection.
9. Windpipe.
11. Breathing condition.
12. Small lung tube.
13. Swallowing flap.
14. Breathing organ.

Down

2. Breathing process.
3. Throat.
5. Breathing muscle.
6. Breathing out.
8. Breathing entrance.
10. Organs for breathing.