Across
- 4. What sets the rhythm of the heart?
- 5. What is the name of the fibers that are spread out within the muscle of the ventricle walls?
- 6. How does Ischemia lead to fibrillation? Lack of ________ ________
- 7. How is blood projected out of the heart?
- 10. What system acts like brakes and accelerators to either decrease or increase the heart rate?
- 11. One purpose of the intrinsic conduction system is to allow the heart to __________ in one direction
Down
- 1. From the sinoatrial node the impulse spreads through the atria to the _________ ________
- 2. Rapid heart beat is called?
- 3. What node in the intrinsic conduction system acts like a pacemaker?
- 8. An uncoordinated shuddering of the heart muscle is called?
- 9. A slower than normal heart beat is called?
- 10. What is the name of an excitable fiber in the intrinsic conduction system? ____________ fibers