Circulatory system

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Across
  1. 1. a liquid that circulates in the veins and arteries
  2. 4. delivers oxygen and nutrients to cells
  3. 7. a protein molecule in RBC
  4. 10. muscular organ that pumps blood
  5. 13. removal of oxygen
Down
  1. 2. treated with oxygen
  2. 3. forms the connection between the ateries and veins
  3. 5. lower 2 cavities of the heart
  4. 6. a blood vessel that delivers blood from the heart to the tissue
  5. 8. 2 flaps that make the blood go 1 way
  6. 9. blood vessels that carry blood low in oxygen from the body back to the heart
  7. 11. supplies oxygenated blood
  8. 12. upper 2 cavities of the heart