Across
- 4. benign tumor of connective tissue in the heart muscle
- 6. upper chamber of the heart
- 8. narrowing of a blood vessel
- 10. specialized nervous tissue (sinoatrial node)in the right atrial wall, it begins the heartbeat
- 14. instrument to measure blood pressure
- 17. inner lining of the heart
- 18. one of two lower chambers of the heart
- 20. enlargement of the heart
- 21. deficiency of oxygen in tissues
Down
- 1. slow heartbeat
- 2. wall or partition
- 3. rapid heartbeat
- 5. relaxation phase of the heartbeat
- 7. largest type of blood vessel
- 9. contraction phase of the heartbeat
- 10. beat of the heart as felt through the walls of the arteries
- 11. irregular or abnormal heartbeat
- 12. largest artery in the body
- 13. without oxygen
- 15. structure in a vein or in the heart that temporarily closes an opening so that blood flows in the proper direction
- 16. thin walled blood vessel that carries oxygen-poor (deoxygenated) blood from body tissues back to the heart
- 19. smallest type of blood vessel