respiratory system
Across
- 4. a large dome shaped muscle below the lungs that expands and compresses the lungs, enabling breathing
- 6. you can use it to both breath and eat
- 7. a flap of tissue in the back of your mouth that keeps food out of your trachea
Down
- 1. two passage ways that branch from the trachea, one for each lung
- 2. two large organs that exchange oxygen and carbon dioxide.
- 3. a passage way in your throat that takes air and brings it out of your lungs
- 5. a part of your body that has two nostrils that you can use to breath through