Across
- 6. the process of intaking oxygen
- 8. runs from the mouth to the stomach
- 9. the lungs put this gas into the bloodstream
Down
- 1. used for smelling and breathing
- 2. the most important organ in the respiratory
- 3. we exhale this gas
- 4. also known as the wind pipe
- 5. prevents food from entering the windpipe
- 7. called the voice box by some