Controversies concerning the anatomical definition of the conduction tissues

The Anatomical Record. Part B, the New Anatomist
Robert H AndersonA F Moorman

Abstract

Conduction across the atrioventricular junctions had long been controversial, with arguments raging as to whether such conduction was myogenic or neurogenic. The landmark study of Tawara in 1906 established the existence of an axis of histologically specialized myocardial cells contained within fibrous sheaths as being responsible for rapid conduction from the atrial to the ventricular myocardium. Keith and Flack then demonstrated that the atrial impulse was generated in the sinus node, with subsequent slowing within the atrioventricular node of Tawara. The detailed reviews of Aschoff and Monckeberg then emphasized the morphological features that permit unequivocal recognition of the nodes, along with rapidly conducting tracts. It is now pertinent that we remember these original criteria for anatomical recognition as we discuss the steps involved in the development of these conducting structures from their embryologic primordiums. In this review, we restate the criteria of Aschoff and Monckeberg, then discuss their relevance to the developmental issues, emphasizing that all myocardial cells have the potential to conduct. The important issues, therefore, are the changes that occur as the heart itself changes from a solitary musc...Continue Reading

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Citations

Jul 8, 2008·The Journal of Thoracic and Cardiovascular Surgery·Robert H AndersonPaul P Lunkenheimer
Nov 16, 2005·The Anatomical Record. Part A, Discoveries in Molecular, Cellular, and Evolutionary Biology·Florence Rothenberg, Igor R Efimov
Nov 8, 2012·Journal of Cardiovascular Electrophysiology·Robert H Anderson, Antoon F M Moorman
Dec 3, 2014·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Eduardo Back SternickHein J J Wellens
May 18, 2012·Reproductive Sciences·Monique W M de LaatCarrie Ris-Stalpers
Apr 30, 2005·Circulation Research·Glenn I Fishman
May 14, 2011·Cardiovascular Research·Alex V PostmaConnie R Bezzina
May 31, 2019·Pacing and Clinical Electrophysiology : PACE·Jacques Billette, Rafik Tadros
Sep 29, 2021·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·Yolanda MacíasRobert H Anderson

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