circulatory system

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Across
  1. 3. keeps both the veins and artery together
  2. 4. main organ of the circulatory system
  3. 7. it part of the veins
  4. 9. sends blood towards the heart
Down
  1. 1. Exchanges gases to remove carbon dioxide and add oxygen to blood
  2. 2. sends blood away from the heart
  3. 5. largest vessel in our body and part of the circulatory system
  4. 6. cava the large vein carrying blood into the heart
  5. 8. it's part of the artery
  6. 9. allow to flow in one direction