Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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1. The sinoatrial node has a common name, What is it? 2. Which two chambers of the heart (atria or ventricles) contract last in a normal cardiac cycle? 3. What two chambers are stimulated immediately after the SA node depolarizes? 4. After the AV node depolarizes, what structures conduct the impulse to the myocardium of the ventricles? 5. What are the main events recorded by an ECG? 6. What electrial event in the heart does the QRS complex represent? 7. Ventricular repolarization is represented by what part of an ECG? 8. What ECG wave is represented by the atrial depolarization? 9. Why is the ECG event indicating atrial repolarization not seen in an ECG? 10. What does a heart block do to impulse transmission in the heart? 11. Fibrillation is uncoordinated cardiac muscle contraction. Predict what an ECG would look like if there were no uniform conduction of electrical activity in the heart. Draw what it might look like.
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Transcribed Image Text:1. The sinoatrial node has a common name, What is it? 2. Which two chambers of the heart (atria or ventricles) contract last in a normal cardiac cycle? 3. What two chambers are stimulated immediately after the SA node depolarizes? 4. After the AV node depolarizes, what structures conduct the impulse to the myocardium of the ventricles? 5. What are the main events recorded by an ECG? 6. What electrial event in the heart does the QRS complex represent? 7. Ventricular repolarization is represented by what part of an ECG? 8. What ECG wave is represented by the atrial depolarization? 9. Why is the ECG event indicating atrial repolarization not seen in an ECG? 10. What does a heart block do to impulse transmission in the heart? 11. Fibrillation is uncoordinated cardiac muscle contraction. Predict what an ECG would look like if there were no uniform conduction of electrical activity in the heart. Draw what it might look like.
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