Human Systems Puzzle

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Across
  1. 3. tissue found surrounding internal organs
  2. 4. system that delivers oxygen and nutrients to cells
  3. 8. system serves as a barrier against infection
  4. 11. direction towards the back of the body
  5. 12. system converts food into simple molecules
  6. 13. system supports and protects the body
  7. 15. system protects body from disease
  8. 16. system contains pancreas, thyroid, hypothalamus
  9. 18. system eliminates waste from the body
  10. 19. direction moving towards the feet
  11. 21. group of cells working together for a particular function
Down
  1. 1. group of tissue working together
  2. 2. system produces gametes
  3. 5. system that rids the body of carbon dioxide
  4. 6. fat, cartilage, tendons are examples of tissue
  5. 7. direction towards the front of body
  6. 9. tissue responsible for movement
  7. 10. muscle tissue of the heart
  8. 14. direction towards the head
  9. 17. system that coordinates the body's response
  10. 20. smallest level of a multi-cellular organisms