RESPIRATORY SYSTEM
Across
- 2. the two pinky spongy bags in our chest cavity
- 5. The process of taking in air using oxygen to make energy
- 7. another name for windpipe
- 8. the sticky substance secreted inside the nose which prevents the entry of dust and germs in the body
- 9. The process of throwing out carbon dioxide
- 10. breathing polluted air causes serious lung disease
- 11. lungs contain blood _______________ which help in exchange of gases
Down
- 1. the process of taking in oxygen and giving out carbon dioxide is called
- 3. the largest muscle in the body which contracts to make space for expanded lungs
- 4. the tiny air sacs which are exchange point of gases
- 6. the windpipe divides into 2 tubes called
- 8. an adult breathes 12 to 14 times in a single ___________