Across
- 2. Chest wall protecting organs
- 5. Fluid-filled space around the lungs
- 7. Airway that carries air to the lungs
- 11. Muscles between the ribs
- 14. One small air sac in the lung
- 16. Cluster of alveoli like a bunch of grapes
- 18. Tube that carries food to the stomach
- 19. Membrane lining the chest wall
- 20. Organ that pumps blood
Down
- 1. Membrane covering the lungs
- 3. Line that divides the right lung
- 4. Top part of the lung
- 6. Breastbone in the center of the chest
- 8. Large vessel carrying blood from heart to lungs
- 9. Muscle that helps you breathe in and out
- 10. Tiny air sacs where gas exchange happens
- 12. Small passage leading to alveolar sacs
- 13. Small openings connecting alveoli
- 15. Gland that helps the immune system (in chest)
- 17. Space between the lungs and chest wall