Across
- 3. Thick,fibrous membrane that surrounds the heart.
- 7. Number of cardiac contractions per minute.
- 9. The largest and shortest myocardial blood vessels. Rapidly divides into the laft anterior descending artery and the circumflex artery.
- 12. TIP of Heart
- 14. vessel that returns venous blood back to heart.
- 15. TOP of Heart
- 16. Valves of the heart through which blood flows through from the atria to the ventricles.
- 19. Middle layer of heart wall made mostly of cardiac muscle tissue.
- 20. Layer of serous pericardium that lies closelt agaisnt the heart; also called the visceral pericardium.
Down
- 1. Returns oxygenated blood from lungs to right atria.
- 2. Delivers unoxygenated blood from right ventricle to lungs.
- 4. Provides oxygenated blood to the right side f the heart muscle.
- 5. Period of relaxation in which the heart chambers are allowed to fill.
- 6. Specialized bands of tissue inserted between myocardial cellsthat increase the rate in which the action potential is spread from cell to cell.
- 8. Amount of blood pumped out by either ventricle in a single cardiac contraction.
- 10. Half-moon shaped valves that seperate the heart from the aorta and pulmonary arteries.
- 11. The amount of blood that is pumped by the ventricles in 1 minute.
- 13. The percentage of blood that leaves the heart each time it contracts.
- 17. Membrane that lines the inside of the heart.
- 18. Delivers oxygenated blood from left ventricle to the body.