Bidder's Nodes
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Bidder's nodes are paired collections of ganglion nerve cells at the border of the atria and ventricle in the frog's heart, named after the anatomist who discovered them. According to the neurogenic theory of heart contractions, their activity causes automatic ventricular contractions, while according to the myogenic theory, they are considered peripheral cells of the autonomous system.
Encyclopedia entry (1928–1936)
Bidder's nodes (Bidder), paired collections of ganglion nerve cells at the border of the atria and ventricle in the frog's heart, named after the anatomist who discovered them. Through nerves located in the septum between the atria, Bidder's nodes are connected with the centrifugal nerves of the heart. According to the neurogenic theory of heart contractions, their activity causes automatic contractions of the ventricle, which is separated from the atria. According to the myogenic theory, the ability for rhythmic contractions is attributed to the heart muscle itself, and then Bidder's nodes should be considered as peripheral cells of the autonomous system, the function of which is not yet completely clear.
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Cite this page
“Bidder's Nodes.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/bidders-nodes/