Across
- 6. This is an electronic apparatus implanted in the chest to stimulate the heart muscle that is weak and not functioning.
- 8. A trained professional in taking samples of blood for testing.
- 9. Structure in veins or in the heart that temporarily closes an opening so that blood flows in only one direction.
- 12. Specialized tissue in the wall between the atria and ventricles.
- 13. An abnormal heart rhythm.
Down
- 1. Instrument to measure blood pressure.
- 2. Pacemaker of the heart.
- 3. Innermost lining of the blood vessels.
- 4. This occurs when blood clots block veins or arteries.
- 5. The name of the two lower chambers of the heart.
- 7. The largest artery in the body.
- 8. Double-layered membrane surrounding the heart.
- 9. A small vein.
- 10. The artery that carries oxygen-poor blood from the heart to the lungs.
- 11. The upper chambers of the heart.