The Sinuatrial node (abbreviated SA node or SAN, also called the sinus node) is the impulse generating (pacemaker) tissue located in the right atrium of the heart, and thus the ...
In the upper part of the right atrium of the heart is a specialized bundle of neurons known as the sinoatrial node (SA node). Acting as the heart's natural pacemaker, the SA node ...
Sinoatrial Node Action Potentials Cells within the sinoatrial (SA) node are the primary pacemaker site within the heart. These cells are characterized as having no true ...