Across
- 2. Breaks food into usable nutrients.
- 5. Keeps body balanced and functioning.
- 7. Long cells that produce force.
- 11. Carry oxygen-rich blood away.
- 13. Moves blood through the body.
- 14. Allows movement through muscle contractions.
- 16. Removes waste from the body.
- 17. Bring blood back to heart.
- 19. Chemical messengers for body functions.
- 20. Breaks food by mechanical means.
Down
- 1. Brings oxygen into the body.
- 3. Releases hormones to regulate body.
- 4. Organs that secrete useful substances.
- 6. Contracts to help create movement.
- 8. Tiny blood vessels for exchange.
- 9. Allows humans to create offspring.
- 10. Keeps internal body conditions stable.
- 12. Breaks down food for energy.
- 15. Supports and protects internal organs.
- 18. Sends signals through electrical impulses.