Across
- 2. separates ventricles
- 5. microscopic blood vessel
- 8. blood vessel that takes blood away from the heart
- 9. node that is also known as pacemaker
- 10. muscular layer of the heart wall
- 11. the lower chambers of the heart
- 16. major artery which supplies blood to the body
- 17. "heart strings" that hold AV valves to papillary muscles
- 18. pressure in arteries when ventricles are relaxing
Down
- 1. the upper chambers of the heart
- 3. recording of electrical current of heart
- 4. heart, blood vessels and ___ make up this system
- 5. artery that supplies the heart with blood
- 6. valve between left ventricle and aorta
- 7. takes blood from heart to lungs
- 8. blood vessel that takes blood to the heart
- 12. pressure in the arteries at peak of ventricular contraction
- 13. AV valve separates right atrium and right ventricle
- 14. AV valve that separates left atrium and left ventricle
- 15. organs that oxygenate blood