Circulatory System

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Across
  1. 5. Blood that is rich in oxygen.
  2. 6. Tiny blood vessels where gases and nutrients are exchanged with cells.
  3. 8. Blood that is low in oxygen and rich in carbon dioxide.
  4. 10. Fatty deposits that can narrow arteries.
  5. 13. The wall that separates the left and right sides of the heart.
  6. 16. A substance in red blood cells that carries oxygen.
  7. 20. Cava A large vein that returns blood from the body to the heart.
  8. 21. An upper chamber of the heart that receives blood.
  9. 23. A condition where fatty plaque builds up inside arteries.
  10. 25. The force of blood pushing against artery walls.
  11. 26. A blood vessel that carries blood away from the heart.
  12. 27. Colour of blood cells that help fight infection and disease.
Down
  1. 1. Vessels Tubes that transport blood throughout the body.
  2. 2. Organs where blood picks up oxygen and releases carbon dioxide.
  3. 3. The largest artery that carries oxygen-rich blood from the heart to the body.
  4. 4. A lower chamber of the heart that pumps blood out of the heart.
  5. 7. The vessel that carries oxygen-rich blood from the lungs to the heart.
  6. 9. An abnormal heart rhythm.
  7. 11. The vessel that carries oxygen-poor blood from the heart to the lungs.
  8. 12. The body system that transports oxygen, nutrients and wastes around the body.
  9. 14. The yellow liquid part of blood that carries cells and dissolved substances.
  10. 15. A blood vessel that carries blood back toward the heart.
  11. 17. The fluid that carries oxygen, nutrients and wastes.
  12. 18. Structures that keep blood flowing in the correct direction.
  13. 19. Blood components that help form clots when injured.
  14. 22. Colour of blood cells that transport oxygen around the body.
  15. 24. The muscular organ that pumps blood around the body.