Sinoatrial node

sinoatrial node

(Science: anatomy, cardiology, physiology) The impulse generating (pacemaker) tissue located in the right atrium, under the epicardium at the upper end of the sulcus terminalis.

The specialised cardiac muscle fibres generate cardiac impulses that normally acts as the pacemaker of the cardiac conduction system.

normal impulses start in the sinoatrial node and are transmitted to the ventricles, through the atrioventricular node and into the bundle of His.

Synonym: nodus sinuatrialis, atrionector, flack's node, keith and Flack node, keith's node, koch's node, sinoatrial node, sinus node.


Please contribute to this project, if you have more information about this term feel free to edit this page



This page was last modified on 3 October 2005, at 21:16. This page has been accessed 7,396 times. 
What links here | Related changes | Permanent link