cardiac question

[Gordon9721]

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😡 i keep getting confused, the pacemaker of the heart: what is it? where is it? and why is it the pacemaker?
is it: AV, Right Atrium, and because it is faster than the SA?
sick of DAT

 

[GRAD]

The pacemaker is the sinoatrial SA node. Its on the corner of the right atrium, it sends signals to the AV node, which sends signals down the two ventricles at the same time...etc...try to find a pic online, i think it will explain it more