Across
- 2. made out of tissue
- 9. protects vital organs
- 10. pumps blood throughout the body
- 11. every living system is made of these
- 13. tells the body what to do through nerves
- 14. part of the excretory system
- 15. air enters though here
- 16. largest organ and acts like a barrier
- 18. digests food and adsorbs nutrients
- 20. gives us movement
Down
- 1. glands throughout the body
- 2. groups of organs that have certain purpose
- 3. exchanges carbon dioxide for oxygen
- 4. waste is stored here
- 5. motion of something
- 6. carries oxygen throughout the body
- 7. carries oxygen back to the heart
- 8. helps the brain spread messages
- 12. main organ that helps us breathe
- 17. food enters through here
- 19. organs are made out of this