Figure 2
Comparative drawings of the posterior (A) and anterior (B) views of
epicardial ganglionated subplexi (sGPs) in different mammals. Scheme
summarizing the descriptions of the disposition, course, and innervation
areas of sGPs highlighted in
different colors. The dotted and shadowed areas represent the main
locations of intracardiac ganglia. While topography of sGPs is generally
similar, structural organization of these sGPs varies with the species.
Intrinsic ganglia from small mammals are discretely located within the
limits of heart hilum on the heart base which is demarcated by dashed
lines, in contrast to larger mammals and humans, where these ganglia
become progressively scattered and widely distributed. The left dorsal
sGP (LDsGP) is labeled in red, middle dorsal (MDsGP) in yellow, dorsal
right atrial (DRAsGP) in pink, ventral right atrial (VRAsGP) in blue,
the ventral left atrial (VLAsGP) in green, left coronary (LCsGP) in
brown, and the right coronary (RCsGP) in magenta, respectively. Other
abbreviations: Ao-aorta; IVC-inferior vena cava; LAA-left atrial
appendage; LAzV-left azygos vein; LIPV-left inferior pulmonary vein;
LSPV-left superior pulmonary vein; PT-pulmonary trunk; RAA-right atrial
appendage; RIPV-right inferior pulmonary vein; RSPV-right superior
pulmonary vein; SVC-superior vena cava.