11. Transport system

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Across
  1. 6. a blood vessel of the heart that carry blood away from the heart and to the lungs.
  2. 7. a blood vessel of the heart that carry blood away from the heart and to the body.
  3. 9. it is a blood that has more carbon dioxide and less oxygen.
  4. 11. the upper chamber of the heart.
  5. 13. it is a blood that has more oxygen and less carbon dioxide.
  6. 15. a blood vessel that has a one-cell thick wall.
Down
  1. 1. part of the blood that can heal wound or cuts.
  2. 2. a blood vessel of the heart that carry blood from the body to the heart.
  3. 3. a blood vessel that carry blood away from the heart.
  4. 4. a blood vessel of the heart that carry blood from the lungs and to the heart.
  5. 5. a structure that prevent the blood from flowing backwards.
  6. 8. a blood vessel that carry blood to the heart.
  7. 10. the lower chamber of the heart.
  8. 12. a cell that fight infections.
  9. 14. a cell that transport oxygen.
  10. 16. part of the blood that transport nutrients and waste.