Across
- 2. muscular middle layer of the heart
- 3. abnormal heart rhythms
- 5. abnormal swollen and twisted vein that occurs in the leg
- 9. relaxation phase of the heart
- 10. instrument to measure blood pressure
- 11. rapid but regular contraction of the atrial
- 12. tiny blood vessels that transport oxygen, blood, and nutrients to cells
- 15. pacemaker of the heart
Down
- 1. improper closure of the mitral valve
- 4. inner lining of the heart
- 6. contraction phase of the heart
- 7. small vein
- 8. local widening of an atrial wall
- 13. vessel
- 14. largest artery in the body