The Respiratory System
Across
- 2. What happens to the diaphragm when we breathe in?
- 5. What structure helps the lungs to breathe in and out?
- 7. What does the trachea divide into?
- 8. How many lobes does the right lung have?
- 9. What structure permits air exchange?
- 10. What gets exchanged for carbon dioxide in the pulmonary capillaries?
Down
- 1. What happens to the chest during inspiration?
- 3. What is the pipe-like structure surrounded by cartilaginous rings?
- 4. Which lung is smaller to allow space for the heart?
- 6. What structure protects the lungs?