Across
- 2. gas waste produced by the body
- 4. relaxation phase of the heart
- 6. blood vessels branching from aorta
- 7. Contraction phase of the heart beat
- 8. abnormal heart sound caused by improper closure of the heart valves
- 10. largest type blood vessel
- 11. inner lining of the heart
- 13. smallest blood vessel
- 14. Valve between the left atrium and the left ventricle
- 16. Specialized muscle fibers connecting the atria with the ventricles
- 17. Largest artery in the body
Down
- 1. bllod that is oxygen poor
- 3. Innermost lining of blood vessels
- 5. record of the electricity flowing through the heart
- 9. Small artery
- 12. specialized tissue in the wall between the atria
- 15. one of two upper chambers of the heart