title: Studies on the structure and innervation of the heart of Apoda (Amphibia).
mesh_terms: D000663:Amphibians / Q000033:anatomy & histology*; D000818:Animals; D005724:Ganglia / Q000033:anatomy & histology; D006321:Heart / Q000033:anatomy & histology* / Q000294:innervation; D006325:Heart Atria / Q000033:anatomy & histology / Q000294:innervation; D006346:Heart Septum / Q000033:anatomy & histology / Q000294:innervation; D006352:Heart Ventricles / Q000033:anatomy & histology / Q000294:innervation; D009411:Nerve Endings / Q000166:cytology; D013045:Species Specificity; D014630:Vagus Nerve / Q000033:anatomy & histology