Human Body Systems

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Across
  1. 1. Moves oxygen into the body and carbon dioxide out
  2. 3. Helps break down food with enzymes
  3. 6. Tiny blood vessels where exchange of substances occur
  4. 7. Tissue connecting muscles to bones
  5. 8. Tube that connects the throat to the stomach
  6. 10. Contracts to help the body move
  7. 12. The brain is part of this system
  8. 14. Protects the body from infection
  9. 15. Main organ of the digestive system
Down
  1. 2. Bones are part of this system
  2. 4. Organ that filters blood and produces urine
  3. 5. Where gas exchange occurs in the lungs
  4. 9. Carries oxygen through the bloodstream
  5. 11. System responsible for hormone production
  6. 13. Main organ of the circulatory system