Morphofunctional characteristics of pacemaker formations in the atrioventricular valves of the heart

  • N. N. Beskrovnova
  • V. V. Korolev
  • I. L. Kosharskaya
  • V. A. Makarychev
  • L. S. Ul'yaninskii
Morphology and Pathomorphology
  • 6 Downloads

Abstract

Multicellular formations responsible for the generation of spontaneous pacemaker activity were found in the cusps of the atrioventricular valves of the rabbit heart by means of a microelectrode technique and electron microscopy. Cells of different morphological structure were found: P cells, cells of the Purkinje type, and transitional cells. These formations were found to have a rich innervation, mainly cholinergic in nature. Definite correlation was found between the morphological structure and electrophysiological parameters of these cells.

Key Words

atrioventricular valves automatic activity membrane potentials P cells 

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Copyright information

© Plenum Publishing Corporation 1977

Authors and Affiliations

  • N. N. Beskrovnova
  • V. V. Korolev
  • I. L. Kosharskaya
  • V. A. Makarychev
  • L. S. Ul'yaninskii

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