Across
- 3. Small sacs within lung tissue where gas exchange takes place
- 5. The muscle that aids in the breathing process and allows the rib cage to expand
- 6. The windpipe; moves air from the nose to the lungs
- 10. group of organs working together
- 14. cells carry oxygen throughout the body
- 16. transport blood to all parts of the body so that gases, nutrients, and waste products are transported to and from the cell
- 17. Collects air from the environment; moistens and heats the air
- 19. group of cells working together
- 20. provide gas exchange between the blood and the air
- 22. The main organs where gases are exchanged between air and the blood
- 23. carry waste products from all the parts of the body back to the heart
Down
- 1. are small vessels where the exchange of oxygen and nutrients form the blood into the cells and carbon dioxide and other waste products enter the blood from cells
- 2. cells that help you stop bleeding if you get a cut
- 4. Cells fight infections
- 7. yellowish liquid that carried nutrients and proteins throughout the body
- 8. Tubes that move air from the trachea to the lungs; one bronchus leads to each lung
- 9. group of tissues working together
- 11. basic unit of life
- 12. tubes that carry blood throughout the entire body
- 13. organ systems working together
- 15. circulates blood through the body by pumping
- 18. carry blood that has oxygen and nutrients to all the parts of the body
- 21. it enters the trachea