Across
- 7. one of two lower chambers
- 8. beat of the heart
- 9. innermost lining of blood vessels
- 10. record of the electrical activity
- 11. partition or wall dividing a cavity
- 12. largest artery in the body
- 13. relaxation phase of the heartbeat
- 14. small blood vessel
- 15. structure in veins or in the heart
Down
- 1. contraction of the heartbeat
- 2. blood carrying from the heart to the lungs
- 3. gas that enters the blood
- 4. small vein
- 5. largest vein in the body
- 6. abnormal swishing sound
- 12. small artery