Across
- 2. Nodes that play a role in regulating heart rhythm
- 6. Fibers that send electrical signals quickly to the right and left ventricles of the heart
- 9. relaxation phase of the heart when the heart refills with blood
- 11. large chambers in the heart that pump blood throughout the body
- 12. small blood vessels that connect arteries and veins
- 13. the right and left upper atria are separated by a septum
- 16. Increase in heart rate beyond 100 beats
- 18. the layer of heart muscle that receives blood from the coronary arteries
- 19. blood vessels that carry blood from the heart to the rest of the body
- 20. the covering of the heart that is attached to the surface of the heart
Down
- 1. the inner layer of the heart that lines the heart chambers and heart valves
- 3. the right and left ventricles are separated by a septum
- 4. the outer layer of the heart that protects the heart
- 5. blood vessels that carry blood from throughout the body to the heart
- 7. record the electrical activity that accompanies atrial and ventricular contractions of the heart
- 8. largest blood vessel in the body
- 10. heart contraction phase when blood is pumped into the arteries
- 14. traditional heart sound picture
- 15. Abnormal or unnatural heart sounds
- 17. small chambers in the heart that receive blood from the veins