Across
- 2. Muscle located under the lungs
- 6. Exhalation of breath from the lungs
- 8. Branches of trachea which enters the lungs
Down
- 1. Main organ of respiratory system
- 3. Double layered protective membrane of the lungs
- 4. Tiny sacs within the lungs where gaseous exchange occur
- 5. Taking air into the lungs
- 7. The wind pipe