Across
- 3. either of the two main branches of the trachea
- 4. a sheet of muscle below the lungs
- 6. another name for windpipe. Allows air to pass from outside the body into your lungs
- 9. another word for breathing out
Down
- 1. gas that gets absorbed by the alveoli, need this for survival
- 2. breathing organs
- 5. tiny air sacs at the end of the bronchioles
- 7. both the trachea and bronchi both contain rings of _________ which helps to keep their shape
- 8. another word for breathing in