Across
- 1. Bronchioles end in tiny air sacs called
- 4. The lungs and what help us breathe?
- 7. voice box, is the top part of the air-only pipe.
- 8. The trachea is also lined with (), which sweep fluids and foreign particles out of the airway so that they stay out of the lungs.
- 9. is the airtight box that houses the bronchial tree, lungs, heart, and other structures.
- 10. At its bottom end, the trachea divides into left and right air tubes called
Down
- 2. One of a pair of organs in the chest that supplies the body with oxygen, and removes carbon dioxide from the body.
- 3. Within the lungs, the bronchi branch into smaller bronchi and even smaller tubes called
- 5. continuation of the airway below the larynx.
- 6. Air enters the respiratory system through the nose or the