Across
- 3. abnormal heart rhythm.
- 4. Largest vein in the body.
- 6. Abnormal swishing sound
- 9. Relaxation phase of the heartbeat.
- 11. Lower tip of the heart.
- 13. slow heart beat
- 14. Smallest type of blood vessel.
- 15. One of two upper chambers of the heart.
Down
- 1. Contraction phase of the heartbeat.
- 2. fast heart beat
- 5. Largest artery in the body.
- 7. Small vein.
- 8. Muscular middle layer of the heart.
- 10. Small artery.
- 12. Beat of the heart