body system

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