Across
- 2. The voice box that keeps airway open and produces sounds.
- 5. Number of heartbeats per minute
- 7. Two organs where gas exchange occurs.
- 8. A condition that makes breathing difficult due to narrowed airways.
- 10. Smaller branches of the bronchi inside the lungs.
- 11. The force of blood pushing against the artery wall.
- 13. A muscle below the lungs that helps with breathing.
- 15. Two main air tubes that branch from the trachea into the lungs.
- 16. A muscular organ that pumps blood throughout the body.
- 18. A harmful habit that damages the respiratory system.
- 19. Blood vessels that carry blood back to the heart.
Down
- 1. Space inside the nose that warms and filters air.
- 3. The rhythmic beating felt in arteries as the heart pumps.
- 4. Tiny blood vessels where oxygen and nutrient exchange occurs.
- 6. A doctor who specializes in diagnosis and treating heart conditions.
- 9. The sound of the heartbeat caused by heart valves closing as blood moves through the heart.
- 10. A fluid that carries oxygen, nutrients, and wastes.
- 12. Passageway for air.
- 14. Tiny air sacs where oxygen and carbon dioxide are exchanged.
- 17. Blood vessels that carry blood away from the heart.