Which of the following is also known as the pacemaker of the heart?
A) atrioventricular node
B) Purkinje fibers
C) atrioventricular bundle
D) sinoatrial node
D) sinoatrial node
The sinoatrial node is known as the pacemaker of the heart. It is the beginning of
the heart's electrical conduction system. The impulse travels down the internodal pathway to the
atrioventricular node, to the atrioventricular bundle, to the bundle branches, and into the Purkinje
fibers.
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