Anatomy and development of the sinoatrial valves in the dogfish (Scyliorhinus canicula)

The Anatomical Record
A GallegoR Muñoz-Chápuli

Abstract

We describe the adult anatomy and the development of the cardiac sinoatrial valves in the dogfish (Scyliorhinus canicula). We use scanning electron microscopy, histological and histochemical techniques in 39 hearts from embryos and adult specimens. The sinoatrial valvular set of the adult dogfish is composed of two transverse valves laterally attached to the sinoatrial junction at their bases. Both valves are composed of two muscular layers, the sinusal and the atrial, whose histological features are similar to the cardiac wall which they face. Collagen bundles, elastic fibers and fibroblasts are present between the muscular layers. The extracellular matrix between the valvular layers also contains sulphated and non-sulphated glycosaminoglycans. The sinoatrial valves develop from two lateral infoldings of the cardiac wall. The left fold is deeper than the right, causing a shift of the sinoatrial communication to the right. The epicardium progressively covers the outer sinoatrial groove and the space between the folds becomes populated by mesenchymal cells. The posterior atrioventricular endocardial cushion is in contact with the base of the left fold until the embryo has about 40 mm TL. The sinoatrial valves, in the dogfish, de...Continue Reading

References

Jul 1, 1987·Journal of Molecular and Cellular Cardiology·H ArrechederaC Ayesta
May 1, 1985·International Journal of Cardiology·A C Wenink, A C Gittenberger-de Groot
Oct 1, 1965·Histochemie. Histochemistry. Histochimie·J E Scott, J Dorling
Nov 1, 1980·Developmental Biology·S Virágh, C E Challice
Jan 1, 1954·The American Journal of Anatomy·R H LICATA
Mar 1, 1964·The Journal of Histochemistry and Cytochemistry : Official Journal of the Histochemistry Society·M J KARNOVSKY, L ROOTS

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Citations

Sep 4, 2013·Biological Reviews of the Cambridge Philosophical Society·Bjarke JensenTobias Wang
Feb 7, 2012·Pediatric Cardiology·Hongbing LiuYiping Chen
Nov 18, 2014·Journal of Anatomy·Desiderius M de BakkerBjarke Jensen
Jan 27, 2009·Developmental Biology·Ramón A Espinoza-LewisYiPing Chen

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