Respiratory Vocab

2. A dome-shaped muscle beneath the lungs that helps draw air in and push air out during breathing.
6. An involuntary spasm of the diaphragm followed by a quick closure of the vocal cords.
8. A single cycle of air being inhaled into the lungs and exhaled out.
9. The process of inhaling oxygen and exhaling carbon dioxide through the lungs.
11. The voice box located above the trachea, containing vocal cords that produce sound.
12. The ____ muscles, located between the ribs, assist in expanding and contracting the chest during breathing.
15. A reflex that forces air out of the lungs to clear mucus, irritants, or particles.
17. A section of the lung; the right lung has three, and the left lung has two.
19. The act of expelling air from the lungs, removing carbon dioxide.
21. Commonly called the windpipe, this tube carries air from the throat to the lungs.
23. The movement of air into and out of the lungs during breathing.
24. The ____ cavity warms, filters, and moistens air before it travels to the lungs.
25. The act of drawing air into the lungs, bringing in oxygen.
26. A reflex involving a deep breath, often triggered by fatigue, boredom, or a need for more oxygen.

1. The process by which oxygen and carbon dioxide move between alveoli and the bloodstream.
3. A sticky substance in the respiratory system that traps dust, germs, and other particles.
4. A condition that inflames and narrows the airways, making breathing difficult.
5. The throat, a shared pathway for air, food, and liquids.
7. The primary organs of the respiratory system where oxygen and carbon dioxide are exchanged.
8. The two large branches of the trachea that deliver air to each lung.
10. Tiny air sacs in the lungs where oxygen is absorbed into the blood and carbon dioxide is released.
13. A small flap of tissue that closes off the trachea during swallowing to prevent choking.
14. The gas inhaled into the lungs and transported by the blood to fuel the body’s cells.
16. The ____ dioxide is the waste gas exhaled by the lungs after being released by the cells.
18. The smallest airways within the lungs that lead directly to the alveoli.
20. Air-filled cavities in the skull that help humidify air and improve voice resonance.
22. A protein in red blood cells that binds to oxygen and transports it through the body.