Across
- 5. Smallest type of blood vessel
- 6. Inner lining of the heart
- 7. Measure of blood pressure
- 8. Beating of heart
- 9. One of two upper chambers of the heart
- 12. Largest artery in the body
- 15. Largest type of blood vessel
- 16. Small artery
Down
- 1. One of two vessels carrying oxygenated blood from lungs to heart
- 2. Abnormal swishing sound
- 3. Blood that is oxygen-poor
- 4. Only time carries oxygen-poor blood from heart to lungs
- 10. Valve between the left atrium and left ventricle
- 11. Relaxation phase of the heartbeat
- 13. Gas that enters the blood through the lungs
- 14. Dioxide Gas released by body cells