Across
- 3. – space between lung and chest wall
- 7. – lung with three lobes
- 9. – carries oxygenated blood to heart
- 12. – passage leading to alveolar sacs
- 15. – cluster of alveoli at duct ends
- 17. – tiny sacs where gas exchange occurs
- 18. – top part of the lung
- 19. – tube behind trachea leading to stomach
- 20. – bottom of lung resting on diaphragm
Down
- 1. – muscle that helps you inhale
- 2. – carries deoxygenated blood to lungs
- 4. – openings that connect alveoli
- 5. – membrane covering lungs
- 6. – lung with two lobes
- 8. – carries air from larynx to bronchi
- 10. – carries blood from heart to lungs
- 11. – muscles between ribs for breathing
- 13. – smaller airways inside the lungs
- 14. – membrane lining chest wall
- 16. – tubes that branch into each lung