Across
- 4. movement of respiratory gases between the atmosphere and the systemic cells of the body.
- 7. forms the rounded floor of the thoracic cavity and is dome-shaped when relaxed.
- 8. small air-filled dilation at the terminal end of the respiratory zone.
- 9. patent open tube that serves as a passage way for air.
- 10. movement of air out of the alveoli.
Down
- 1. middle pharyngeal region.
- 2. the air in the environment that surrounds us.
- 3. membrane, thin wall between the air with the alveolar lumen and the blood within the pulmonary capillary.
- 5. zone, structures include the passageways from the nose to end of the terminal bronchioles.
- 6. frequency of sound waves.