Editing Atrioventricular node (section)

{{Short description|Electrical conducting structure in the heart}}
{{Infobox anatomy
| Name        = Atrioventricular node
| Latin       = nodus atrioventricularis
| Image      = Reizleitungssystem 1.png
| Caption    = Image showing the [[Electrical conduction system of the heart|conduction system of the heart]]. The AV node is labelled '''2'''.
| Precursor   =
| System      = [[Electrical conduction system of the heart]]
| Artery      = [[Atrioventricular nodal branch]]
| Vein        =
| acronym     = AV node
| Nerve       =
| Lymph       =
}}
The '''atrioventricular node''' ('''AV node,''' or '''Aschoff-Tawara node)''' electrically connects the [[heart]]'s atria and ventricles to coordinate beating in the top of the heart; it is part of the [[electrical conduction system of the heart]].<ref name=gray2002p135>{{Cite book |first=Huon H. |last=Gray |author2=Keith D. Dawkins |author3=Iain A. Simpson |author4=John M. Morgan |title=Lecture Notes on Cardiology |publisher=[[Blackwell Science]] |location=[[Boston]] |year=2002 |page=[https://archive.org/details/lecturenotesonca04edunse/page/135 135] |isbn=978-0-86542-864-5 |url=https://archive.org/details/lecturenotesonca04edunse/page/135 }}</ref> The AV node lies at the lower back section of the [[interatrial septum]] near the opening of the [[coronary sinus]], and conducts the normal electrical impulse from the atria to the ventricles. The AV node is quite compact (~1 x 3 x 5&nbsp;mm).<ref name="medical-dictionary.thefreedictionary.com">[http://medical-dictionary.thefreedictionary.com/_/viewer.aspx?path=dorland&name=triangle_of-Koch.jpg Full Size Picture triangle of-Koch.jpg]. Retrieved on 2008-12-22</ref>