SA node
Where is the SA node – the pacemaker located? It is hard to see in human hearts. It is located a little to the left of the sulcus terminalis (faint line seen on the surface of the right atrium where the crista terminalis is on the inside) near the SVC opening. (Crista is the dividing line between the part of the atrium that develops from the primitive atrium and the one that forms from sinus venarium.)
Dr. S. Chandra
Dr. S. Chandra, Faculty of Medicine, Memorial University of Newfoundland
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