sinuatrial node
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sin·u·a·tri·al node
[TA]the mass of specialized cardiac muscle fibers that normally acts as the "pacemaker" of the cardiac conduction system; it lies under the epicardium at the upper end of the sulcus terminalis.
Synonym(s): nodus sinuatrialis [TA], atrionector, Flack node, Keith and Flack node, Keith node, Koch node, sinoatrial node, sinus node
sin·u·a·tri·al node
, sinoatrial node (sin'yū-ā'trē-ăl nōd, sī'nō-) [TA]The mass of specialized cardiac muscle fibers that normally acts as the "pacemaker" of the cardiac conduction system; it lies under the epicardium at the upper end of the sulcus terminalis.
Keith,
Sir Arthur, Scottish anatomist, 1866-1955.Keith bundle - modified cardiac muscle fibers. Synonym(s): atrioventricular bundle
Keith and Flack node - the mass of specialized cardiac muscle fibers that normally acts as the pacemaker of the cardiac conduction system. Synonym(s): Flack node; Keith node; sinuatrial node
Keith node - Synonym(s): Keith and Flack node
Koch,
Walter, German surgeon, 1880–.Koch node - the mass of specialized cardiac muscle fibers that normally acts as the "pacemaker" of the cardiac conduction system. Synonym(s): sinuatrial node
Koch triangle - a triangular area of the wall of the right atrium of the heart that marks the situation of the atrioventricular node.
sin·u·a·tri·al node
, sinoatrial node (sin'yū-ā'trē-ăl nōd, sī'nō-) [TA]The mass of specialized cardiac muscle fibers that normally acts as the "pacemaker" of the cardiac conduction system; it lies under the epicardium at the upper end of the sulcus terminalis.