Across
- 3. flap located so that the food doesnt enter the windpipe
- 6. where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.
- 8. it is the main passageway into the lungs
- 9. air enter through this
Down
- 1. thin skeletal muscle that sits at the base of the chest and separates the abdomen from the chest
- 2. Blood contains an iron containing red pigment called
- 4. contains the voice box
- 5. the wind pipe
- 7. main source of respiration