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What Normally Serves as the Pacemaker of the Entire Heart? A

Question 41
Multiple Choice

What normally serves as the pacemaker of the entire heart? A) Purkinje fiber system B) atrioventricular (AV) node C) sinoatrial (SA) node D) atrioventricular (AV) bundle

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Q 42
Determine the impact if the connection between the sinoatrial (SA) node and the atrioventricular (AV) node becomes blocked. A) The ventricular rhythm will not change. B) The ventricles will beat faster. C) The ventricles will beat more slowly. D) The atria will contract more forcefully.
Q 43
What is NOT part of the cardiac conduction system? A) atrioventricular (AV) bundle B) sinoatrial sinoatrial (SA) node C) atrioventricular (AV) valve D) atrioventricular (AV) node
Q 44
The right and left atria depolarize and contract following the arrival of the action potential from the: A) atrioventricular (AV) node. B) Purkinje fibers. C) sinoatrial (SA) node. D) atrioventricular (AV) bundle.
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