Circulatory and Respiratory Systems Crossword

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Across
  1. 1. A red fluid
  2. 3. The vessel that carries blood to the heart
  3. 5. Windpipe
  4. 7. An upper chamber of the heart
  5. 10. The vessel that carries blood from the heart
  6. 11. You're not a mouth-breather, you're a ____-breather
  7. 12. The back of the mouth
  8. 14. A cell in blood that fights disease
  9. 15. A component of blood that carries nutrients
Down
  1. 2. You have two _____
  2. 4. A cell in blood that carries oxygen
  3. 6. The final portion of the heart
  4. 8. The voice box
  5. 9. These come off the trachea
  6. 13. The part of the lung where oxygen goes into the blood