Across
- 2. voice box located between the pharynx and the trachea
- 6. tiny air sacs in lungs where gas exchange occurs
- 8. part of the throat behind the mouth and nasal cavity space inside
- 10. a flap that covers the opening of the larynx during swallowing
- 11. a large muscle below the lungs that helps with breathing
Down
- 1. membrane that lines the lungs and chest cavity
- 3. smaller airways that lead to the alveoli
- 4. the tubes that branch from the trachea into the lungs
- 5. wind pipe carries are from the larynx to the bronchi
- 7. primary organ of the respiratory system
- 9. cavity space inside the nose where air enters