EMBRYONIC DEVELOPMENT & STEM CELL COMPENDIUM
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Sinoatrial Node


Hrt.SAN
The sinoatrial node (SAN) is situated at the junction of the superior vena cava and right atrium and acts in regulating the coordinated cardiac contractions by generating distinct electrical impulses. The generated impulses spread through the atrial chamber myocardium, and initiate contraction of the atria.
SA node, pacemaker
Sinoatrial Node
Multiple Ancestors Single Ancestor No Descendants Develops from Part of Parent
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