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Questions and Answers
What is the normal rate of the SA node as the primary pacemaker of the heart?
What is the normal rate of the SA node as the primary pacemaker of the heart?
- 100-110 times per minute (correct)
- 120-130 times per minute
- 40-60 times per minute
- 15-40 times per minute
Which of the following is NOT a pacemaker of the heart?
Which of the following is NOT a pacemaker of the heart?
- Sinoatrial node
- Purkinje fibers
- Atrioventricular node
- Right bundle branch (correct)
What is the role of the AV node in the heart's pacemaker system?
What is the role of the AV node in the heart's pacemaker system?
- Tertiary pacemaker
- Primary pacemaker
- None of the above
- Secondary pacemaker (correct)
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