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  3. ii provide a brief answer for each of the following...

Question: ii provide a brief answer for each of the following...

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II. Provide a brief answer for each of the following questions about heart fiunction 1. What valves close during lubb and dupp? 2. What does one cardiac cycle represent? 3. What t wave on an ECG corresponds to an impulse sent from the SA node? 4. Why is there a delay when the AV node fres an impulse? 5. Why is the QRS complex larger than the P wave? 6. What is an ECG? 7. Where is the SA node located? 8. What is the function of the SA node? 9. What does an impulse from the AV node cause to happen? 10. What does the T wave on an ECG represent? 11. What are the atría doing during atrial systole? 12. Which node sends an impulse to promote atrial systole? 13. What happens during ventricular systole? 14. When the atria are in systole, what is happening with the ventricles?

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