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