Body Systems
Across
- 4. A flat muscle that helps you breath
- 6. a blood cell that helps fight disease
- 9. Windpipe
- 10. A tiny filter that is found in the kidney
- 13. The lower chamber of your heart
- 15. the main organ that helps you breathe
Down
- 1. A place where urine is stored
- 2. A muscular sac where chemical digestion begins
- 3. An organ that helps filter out waste
- 5. a blood vessel that takes blood away from the heart
- 7. A muscular tube that connects your stomach and your mouth
- 8. a group of organs
- 11. A place where mechanical digestion begins
- 12. a blood vessel that takes blood to the heart
- 14. the basic unit of living things