Viscerosomatic & Chapman Body Map
The complete, interactive brain-dump map. Click any internal organ or search by name to illuminate sympathetic innervation levels, collateral ganglia, vagus vs S2–S4 parasympathetics, and anterior/posterior Chapman reflex points.
Heart
2nd Intercostal Space, adjacent to the sternum.
Between T2 and T3 transverse processes, midway between spinous process and transverse process tip.
Right-sided sympathetics innervate SA node (hyperactivity causes supraventricular tachycardias). Left-sided sympathetics innervate AV node (hyperactivity causes premature ventricular contractions or AV blocks). Left pectoral myofascial trigger point mimics angina.