Cardiovascular System Crossword Puzzle

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Across
  1. 3. Cava
  2. 7. WBC
  3. 9. composed of cardiac muscle tissue
  4. 12. RBC
  5. 13. Artery
  6. 15. carries blood towards the heart
Down
  1. 1. largest artery in the human body
  2. 2. fluid-filled sac that surrounds your heart
  3. 4. upper chambers of the heart
  4. 5. Vein
  5. 6. Lower chambers of the heart
  6. 8. Platelet
  7. 10. network between the arterioles and venules
  8. 11. lines the inside chambers of the heart
  9. 14. carries blood away from the heart