Across
- 2. — Airflow regulators
- 4. — Air moistening process
- 6. — Thorax contraction movement
- 8. respiratory tract* — Lower airway division
- 10. — Air sac inflammation
- 13. — Chronic airflow limitation
- 15. membrane* — Gas exchange membrane
- 16. — Tiny blood vessels in lungs
- 18. — Windpipe
- 19. dioxide* — Waste gas removed
- 21. cancer* — Uncontrolled lung cell growth
- 22. — Olfactory function
- 23. clearance* — Respiratory defense system
- 24. — Primary breathing organs
- 27. — Main airway branches
- 30. volume* — Air trapped after exhalation
- 34. — Damaged alveoli condition
- 35. cycle* — Nasal airflow alternation
- 37. ions* — Carbon dioxide transport form
- 40. cavity* — Warms and moistens inhaled air
- 41. — Tiny air sacs for gas exchange
- 42. — Thorax expansion movement
Down
- 1. — Air movement mechanism
- 2. — Gas needed for cells
- 3. — Protects airway during swallowing
- 4. — Smaller bronchial branches
- 5. — Air-filled skull cavities
- 7. — Oxygen concentration in air
- 8. — Gas balance maintenance
- 9. transport* — Movement of gases in blood
- 10. — Chronic airway inflammation
- 11. ventilation* Process of breathing in and out
- 12. respiration* — Gas exchange in body tissues
- 14. — Excess mucus in bronchi
- 17. — Microscopic lung structure
- 20. — Bacterial lung infection
- 21. — Main muscle of inhalation
- 25. — Organ of smell and main air entry
- 26. — Removal of dust and particles
- 28. respiration* — Energy production process
- 29. — Protein carrying oxygen
- 30. — Common passageway for food and air
- 31. respiration* — Gas exchange in the lungs
- 32. respiratory tract* — Upper airway division
- 33. perspiration* — Water loss through breathing
- 36. cells* — Mucus-producing cells
- 38. oblongata* — Breathing control center
- 39. — Voice box