Across
- 3. muscular middle layer of heart
- 5. largest vein
- 8. contraction part of heartbeat
- 11. largest artery
- 12. beat of a heart, felt through wall of arteries
- 13. one of the hearts upper chambers
- 14. abnormal swishing sound
- 15. one of the hearts lower chambers
Down
- 1. measures blood pressure
- 2. nervous tissue in right atrium; begins heartbeat
- 4. relaxation part of the heartbeat
- 6. smallest type of blood vessel
- 7. small vein
- 9. double-layer membrane surrounding heart
- 10. wall dividing cavity between right and left atria
- 11. small artery