Question

question a
what area of the hearts electrical conduction is known as the \pacemaker\ of the heart?
a av node
b sa node
c purkinje fibers
d bundle of his

Explanation:

The SA (sinoatrial) node is the natural pacemaker of the heart as it initiates the electrical impulses that regulate the heart's rhythm. The AV node, Purkinje fibers, and Bundle of His have other roles in the heart's electrical conduction but do not act as the primary pacemaker.

Answer:

B. SA node