FMA definition : Subdivision of conducting system of heart at the junction of the right atrium and
the superior vena cava, around the sinoatrial nodal branch of right coronary artery
and is continuous with the internodal tract.;
Synonyme FMA : Sinus node; Sinuatrial nodal muscle tissue; SA node; Sinoatrial node; Sinus node of Keith and Flack; Node of Keith-Flack; Sinu-atrial node; Cardiac pacemaker; SA nodal muscle tissue; Sino-atrial node; Koch's node;
Subdivision of conducting system of heart at the junction of the right atrium and
the superior vena cava, around the sinoatrial nodal branch of right coronary artery
and is continuous with the internodal tract.