Circulatory system in Humans

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Across
  1. 2. upper two chambers of heart
  2. 6. a substance in blood which contains iron
  3. 7. brings blood back to the heart from body parts
  4. 9. take blood from heart to body parts
  5. 10. lower two chambers of heart
Down
  1. 1. a system of tubes
  2. 3. arteries and veins are connected by these
  3. 4. pumps blood and keep it moving in blood vessels
  4. 5. a thick red fluid containing RBCs, WBCs & platelets
  5. 8. this side of heart is bigger