The Respiratory System
Across
- 2. responsible for letting air enter the body,then warming and filtering it
- 6. total volume of air that can be exhaled after maximum inhalation
- 8. houses the lungs and heart
- 9. contracts and relaxes to help the lungs move
Down
- 1. thin-walled air sacks in the lungs where gas exchange occurs
- 3. voicebox
- 4. instrument used for measuring air entering and leaving the lungs
- 5. muscles located between the ribs
- 7. bring air from trachea to lungs and branch into bronchioles