CARDIAC Test Bank Questions
CARDIAC - Test Bank Questions
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CARDIAC - Test Bank ) (Solved Questions 100% VERIFIED QUESTIONS AND ANSWERS)
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---120October 20232023/2024A+
- CARDIAC - Test Bank Questions 
 
Chapter 11 >>> 
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 healthy heart. The atrioventricular node beats 40 to 60 beats/min. Ventricular tissue must have an electrical impulse to contract. Purkinje fibers beat 1...
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