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In vitro effect of acetylcholine on function of sinoatrial node in rat heart

P V Sutyagin1, E E Kalinina, A S Pylaev

  • 1Department of Morphology, Russian State Medical University, Moscow. charyeva@yandex.ru

Bulletin of Experimental Biology and Medicine
|January 22, 2005
PubMed

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Conduction System of the Heart01:19

Conduction System of the Heart

Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...