Body systems crossword

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Across
  1. 4. The organ that is used for oxygen intake and carbon dioxide output
  2. 6. The system that is used for breathing
  3. 10. The system that breaks down food and converts it to energy
  4. 11. The organ that pumps blood through the body
  5. 12. The system that circulates blood and nutrients
Down
  1. 1. Nerve cell
  2. 2. The system that contains all the bones
  3. 3. The system that helps control the body
  4. 5. the organ that breaks down food into nutrients for energy
  5. 7. The system that gets rid of liquid wastes
  6. 8. The system that fights sickness such as viruses
  7. 9. The organ that controls all of the body and it's functions