breaking news
AV node: The atrioventricular
node, or AV node, is the electrical link between the upper chambers of the heart
(atria) and the lower chambers (ventricles). The AV node receives signals that
are initiated by the sinus node in the right atrium of the heart. If the sinus
node is diseased and ceases to function, the AV node can take over the role of
pacemaker for the heart.
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