What is the pacemaker of the heart?

A) AV node
B) SA node
C) bundle of His
D) Purkinje fibers


B
Explanation:
A) The AV node is not the pacemaker of the heart.
C) The bundle of His is not the pacemaker of the heart.
D) Purkinje fibers are not the pacemaker of the heart.

Anatomy & Physiology

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