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This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Czech translation. The original can be viewed here: Electrical conduction system of the heart.svg: . Modifications made by Icewalker cs.
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The atrioventricular node or AV node electrically connects the heart's atria and ventricles to coordinate beating in the top of the heart; it is part of the electrical conduction system of the heart. [1]
This rate can be altered, however, by nerves that work to either increase heart rate (sympathetic nerves) or decrease it (parasympathetic nerves), as the body's oxygen demands change. Ultimately, muscle contraction revolves around a charged atom (ion) , calcium (Ca 2+ ) , [ 3 ] which is responsible for converting the electrical energy of the ...
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