Exam (elaborations)
4TH SEMESTER URDEN Exam completed A
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4TH SEMESTER URDEN 1. Which of the following structures is the primary pacemaker of the heart? a. Ventricular tissue c. Sinoatrial node b. Atrioventricular node d. Purkinje fibers ANS: C With an intrinsic rate of 60 to 100 beats/min, the sinoatrial node is the primary pacemaker in a heal...
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