Heart of the Matter

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Across
  1. 3. yellow, liquid part of blood
  2. 5. the main cause of heart attack is blockage of these arteries
  3. 7. blood cells fight infection
  4. 9. upper chamber of the heart
  5. 12. takes blood away from the heart
  6. 15. irregular beating of the heart
  7. 16. takes blood back to the heart
Down
  1. 1. lower chamber of the heart
  2. 2. blood picks up oxygen in the ______ (= pulmonary)
  3. 4. largest artery in the body
  4. 6. puts you at a higher risk for heart disease
  5. 8. ________ disease is the #1 leading cause of death in the United States
  6. 10. made in the bones
  7. 11. largest artery in the body
  8. 13. blood cells that carry oxygen
  9. 14. directs the flow of blood through the chambers of the heart