Multiple Choice
A 50-year old received trauma to the chest that caused severe impairment of the primary pacemaker cells of the heart.Which of the following areas received the greatest damage?
A) Atrioventricular (AV) node
B) Sinoatrial (SA) node
C) Bundle of His
D) Ventricles
Correct Answer:

Verified
Correct Answer:
Verified
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