Across
- 3. allow air to pass into the chamber called larynx
- 5. which helps lungs in contraction and expansion
- 6. enter the nose through the nasal cavity
- 7. contains a number of air sacs and blood vessels
Down
- 1. is the process in which oxygen is taken in and carbon dioxide is released
- 2. is the voice box of our body
- 4. get divided into two part called bronchi