PACEMAKER :-
.It Is Also Called Sinoatrial Node or SA node.
.The SA node Is Composed Of Special Muscle Called Purkinji.
.Pacemaker Is a Specialized Region Of Cardiac Muscles That Maintain
The Rhythm Of The Heart.
.SA node initiates The Electrical Impulse For Heart Beat.
.The Cell Of The SA node Generate Electrical Impulses Which Is Responsible The The
For The Rest Of Heart Electrical Activity.
.The Pacemaker Is Situated In The Walls Of Right Auricle.
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