Intrinsic nerve supply of the ventricles of the heart.
D000818:Animals; D006168:Guinea Pigs; D006329:Heart Conduction System / Q000033:anatomy & histology*; D006352:Heart Ventricles; D051379:Mice; D009206:Myocardium / Q000166:cytology; D009413:Nerve Fibers, Myelinated; D051381:Rats