The normal heart rhythm begins in the ________ which acts as the ________ of the heart rhythm.
A) sinoatrial node; pacemaker
B) bundle of His; conductor
C) Purkinje fibers; bundle branches
D) ventricles; stimulator
E) AV node; gateway
Correct Answer:
Verified
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A)heart
B)incision
C)repair
D)excision
E)enlargement
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