Across
- 2. exhale of breath,exhalation
- 4. drawing in of breath,inhalation
- 6. passageways for air
- 7. the voice box
- 8. elastic sacs with branching passages to airways
Down
- 1. air filled sockets connected to nasal cavity
- 3. muscle that helps to inhale and exhale
- 5. the process of breathing in oxygen and out carbon dioxide