Across
- 3. Air passage to the bronchus.
- 5. A protective cage around the organs of the chest.
- 7. Found between the ribs, contracting and relaxing in the breathing process.
- 8. Sheet of the muscle dividing the chest cavity and the abdominal cavity.
Down
- 1. Positioned inside the chest cavity.
- 2. Has rings of cartilage to allow the tubes to be flexible and to stay open.
- 4. Tubes attached to the Trachea so the air can flow to the lungs.
- 6. Smaller sub-divisions of the Bronchi leading to the Alveoli.
- 9. Small air sac; there are millions in the lungs. Gaseous Exchanged takes place here.