Human Body Crossword

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Across
  1. 2. System that takes in oxygen.
  2. 5. Part of blood that carries oxygen.
  3. 10. System that moves blood around your body.
  4. 11. System that sends signals around your body telling it what to do.
  5. 12. Yellow liquid that makes up over half of our blood.
  6. 14. Part of blood that fights sickness.
  7. 16. Main organ of the circulatory system and also called a pump.
Down
  1. 1. System that protects organs and gives your body shape.
  2. 3. Smallest part of blood that causes clots.
  3. 4. Main organ of the nervous system that controls your body.
  4. 6. Main organ of the respiratory system that expand and fill with air.
  5. 7. Main organ of the digestive system that uses acid to break down food.
  6. 8. System that breaks down food into energy.
  7. 9. System that covers the bones and allows your body to move.
  8. 13. Red liquid that carries oxygen around your body.
  9. 15. Outer layer that regulates temperature.