Across
- 4. or wall dividing a cavity septum
- 6. that is oxygen-poor. deoxygenated blood
- 7. the electrical activity of your heart electrocardiogram
- 9. apparatus implanted in the chest to stimulate heart muscle that is weak and not functioning pacemaker
- 11. is formed by a single layer of cells that lines the interior of the heart. Endothelium
- 13. the arteries that supply the myocardium of the heart coronary arteries
- 14. of the heart that receives blood from an atrium and pumps it through the arterial system. Ventricle
- 15. is one of the largest and longest arteries in the body aorta
Down
- 1. layer of the heart myocardium
- 2. vessel is responsible for receiving blood that comes from the upper part of the body vena cava
- 3. fibrous membrane that surrounds the heart pericardium
- 5. cycle in which the heart muscle relaxes after a contraction diastole
- 8. the right lower chamber (right ventricle) from the right upper chamber of the heart. tricuspid valve
- 10. or vertex of the heart. apex of the heart
- 12. vein. venule