Across
- 3. The system that we presented
- 5. The smaller of the two entry points for air
- 7. Where the transfer of oxygen and carbon dioxide occur
- 8. Largest of the two entry points for air
- 9. This muscle causes the Lungs to contract and expand
- 10. Term referred to when your blood is filled with oxygen
- 11. The small direct passageways into the lungs
- 12. A tube that is commonly know as the windpipe
Down
- 1. What oxygen is converted to in the cycle
- 2. How you start the cycle
- 4. Tiny grape-like sacs
- 6. Tubular structure that allows air to pass to the lungs
- 7. Commonly known as the voice box