Respiratory system

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

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