Illustration: Sa Nodes Signal In The Heart Or Sinoartial Node Signal
ID 195980955 © 7activestudio | Megapixl.com
The he SA node is the heart's natural pacemaker. The SA node consists of a cluster of cells that are situated in the upper part of the wall of the right atrium (the right upper chamber of the heart). The electrical impulses are generated there. The SA node is also called the sinus node.
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aorta arteries arterioles artery atria atrioventricular atrium blood body capillaries cells chambers cluster cycle deoxygenated electrical endocardium epicardium heart human impulse lungs myocardium node organ oxygenated oxygenrich pulmonary pump signal signals sinoatrial tissue tricuspid veins ventricle ventricles venules
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