Circulatory System - The Heart

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Across
  1. 4. What is the leading cause of Coronary Heart Disease?
  2. 6. A disease where plaque is built up in the coronary arteries causing blockage for blood flow.
  3. 8. What is the best way to treat Coronary Heart Disease?
  4. 11. What types of blood vessels carry oxygen-rich blood from the heart back to the body?
  5. 12. Blood cells travel from the heart to the lungs to get rid of carbon dioxide and to receive _____.
  6. 13. _____ take oxygen-poor blood back to the heart.
  7. 15. Lower half of the heart.
Down
  1. 1. Large vein where oxygen-poor blood from head and arms enter the heart.
  2. 2. _____ open and close to allow blood to flow in one direction.
  3. 3. Main artery that leaves the heart, carrying oxygen-rich blood back into the body.
  4. 5. The heart is part of the _____ system.
  5. 7. A muscular organ that pumps blood throughout the body.
  6. 9. What separates right atrium from right ventricle?
  7. 10. The heart is divided into four _____ .
  8. 14. Top half of the heart.