Across
- 5. double layered membrane surrounding the herat.
- 7. record of the electrical activities of the heart.
- 8. small artery.
- 9. abnormal swishing sound from an improper closure of the heart valve.
- 10. partition of walls dividing a cavity.
- 13. blood that is oxygen poor.
- 14. innermost lining of the blood vessel.
- 15. one of two upper Chambers of the heart.
Down
- 1. flow of blood from the heart to the lungs and back to the heart.
- 2. contraction phase of the heartbeat.
- 3. relaxation phase of the heartbeat.
- 4. beat of the heart as felt through the walls of the artery.
- 6. largest artery in the body.
- 11. inner lining of the heart.
- 12. small vein.