Across
- 5. tiny air sacs in the lungs
- 6. substance that provides nutrients for body functions
- 7. organ that filters blood
- 9. system that breaks down food into nutrients
- 10. small part of the kidney that filters blood
- 12. exit tube
- 13. muscles push food down the digestive system
Down
- 1. uses o2 to break apart glucose
- 2. system that regulates liquid in the blood
- 3. liquid waste
- 4. space in the chest
- 8. system that brings in o2 and removes
- 11. tubes that connect the bladder and kidneys