title: [Ultrastructural organization of cardiomyocytes in various lower vertebrates].
abstract: Electron microscopy was used to study myocardium in Cyprinus carpio, Bufo bufo and Lacerta agilis. Myofibrils, mitochondria, nuclei and secretory granules in cardiomyocytes (CMC) of atrium and ventricle were analyzed quantitatively. Amphibians and reptiles showed significant complication of both structural organization of CMC and intercellular contacts versus bony fish. The absence of T-systems in bony fish was noted.
authors.affiliation: Department of Histology, Medical Academy of Orenburg, K.I. Skryabin State Academy of Veterinary and Biotechnology, Moscow.
authors.forename: S M
authors.initials: SM
authors.lastname: Zavaleeva
mesh_terms: D000818:Animals; D016275:Atrial Function; D002023:Bufo bufo / Q000033:anatomy & histology* / Q000502:physiology; D002347:Carps / Q000033:anatomy & histology* / Q000502:physiology; D002467:Cell Nucleus / Q000648:ultrastructure; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D006325:Heart Atria / Q000648:ultrastructure; D006352:Heart Ventricles / Q000648:ultrastructure; D008116:Lizards / Q000033:anatomy & histology* / Q000502:physiology; D008854:Microscopy, Electron; D008929:Mitochondria, Heart / Q000648:ultrastructure; D009206:Myocardium / Q000648:ultrastructure*; D009210:Myofibrils / Q000648:ultrastructure; D013045:Species Specificity; D016276:Ventricular Function
vernacular_title: Ul'trastrukturnaia organizatsiia kardiomiotsitov nekotorykh nizshikh pozvonochnykh.