Exam (elaborations)
AACN-LESSON 1, THE ANATOMY BEHIND ECG
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AACN-LESSON 1, THE ANATOMY BEHIND ECG...
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The Purkinje fibers function as a backup pacemaker for the heart. What is theirnormal rate? - ANSWER: 20-40bpm.
What does the T-wave represent? - Answer: ventricular repolarization
The SA and AV nodes are located in which chamber of the heart? - Answer:
Right Atrium (RA).
Which valves sit between the atria and ventricles? - ANSWER The Mitral and
Tricuspid valves
What component of the ECG rhythm represents atrial repolarization? -
ANSWER It is not visible since the QRS activity is higher.
Which of the following constitutes the AV junction? (Select 2) - Answer:
Bundle of His
AV Node
Which of the following is not due to ventricular contraction? - ANSWER
Reduced pressure within the atria
The ECG rhythm represents atrial depolarization and contraction as the
____________. - ANSWER P Wave
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