title: Morphometric analysis of myocardial cells in a teleost.
abstract: Morphometric parameters are described for myocardial cells in the ventricle and atrium in a teleost, Gadus virens L. The myofibrils volume fractions are 73 and 78% in ventricle and atrium, respectively. The corresponding values for mitochondria and sarcoplasmic reticulum are 23 and 20%, and 0.5 and 0.4%. The muscle cells in the ventricle contain more glycogen than the atrial ones. The morphometric parameters are compared with those previously reported for cardiac muscle cells in mammals.
mesh_terms: D000818:Animals; D005399:Fishes / Q000033:anatomy & histology*; D006003:Glycogen / Q000378:metabolism; D006325:Heart Atria / Q000033:anatomy & histology; D006352:Heart Ventricles / Q000033:anatomy & histology; D008929:Mitochondria, Heart / Q000648:ultrastructure; D009206:Myocardium / Q000648:ultrastructure*; D009210:Myofibrils / Q000648:ultrastructure
chemical_list: D006003:Glycogen