Bulletin of Experimental Biology and Medicine

, Volume 85, Issue 4, pp 530–533 | Cite as

Morphological and biochemical correlations in muscle tissue of the atria and ventricles

  • R. A. Drobysheva
  • S. A. Tumakov
Morphology and Pathomorphology


An electron-microscopic investigation of heart muscle tissue showed that the cardiomyocytes of the atria differ from those of the ventricles. Three types of cells differing in the character of relations between the organoids and the number of specific secretory granules in them, were found in the atrial muscle tissue. A study of the distribution of the activity of lactate dehydrogenase (LD) and its isozymes by disc electrophoresis and isoelectric focusing showed that LD isozyme spectra of the ventricles and atria differ considerably from each other. It is suggested that the sources of energy and the mechanism of energy production are not the same in the muscle cells of the atria and ventricles.

Key Words

cardiomyocytes of the atria and ventricles ultrastructure lactate dehydrogenase isozyme spectrum 


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Copyright information

© Plenum Publishing Corporation 1978

Authors and Affiliations

  • R. A. Drobysheva
  • S. A. Tumakov

There are no affiliations available

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