Respiratory System
Across
- 5. air movement from the atmosphere into the lungs
- 7. the process in which the body takes in oxygen and removes carbon dioxide
- 8. a hollow tube strengthened and open by rings of cartilage
- 9. another name for the voice box
Down
- 1. tiny vessels carrying blood
- 2. clusters of tiny air sacs
- 3. another name for throat
- 4. air movement from the lungs to the atmosphere
- 6. the process by which air moves in and out of the lungs
- 9. to bag-like organs one either side of the heart