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What is the proper name for the electrical system in the heart?
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What is the proper name for the electrical system in the heart?

User Loren Pechtel
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Answer:

SA node

Step-by-step explanation:

The SA node (called the pacemaker of the heart) sends out an electrical impulse. The upper heart chambers (atria) contract. The AV node sends an impulse into the ventricles. The lower heart chambers (ventricles) contract or pump.

User Chinskiy
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