Atrioventricular node
From Health Encyclopedia
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Broader Terms
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Scope Note
small nodular mass of specialized muscle fibers located in the interatrial septum near the opening of the coronary sinus.
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Facts (generated by robot; please edit if you find it inaccurate)
- Atrial flutter: In this abnormal rapid heart rhythm the abnormal tissue generating the rapid heart rate is also in the atria, however, the atrioventricular node is not involved.
- The atrioventricular node is poorly defined, present at the caudal end of the interatrial septum.
- no named branches atrioventricular node and the surrounding myocardium artery to the atrioventricular node is located at the junction of the coronary sulcus and the posterior interventricular sulcus artery to the sinuatrial node right coronary a.
- Since the atrioventricular node is small no depolarisation voltage is recorded and an isoelectric PR segment is seen on the electrocardiograph.
- The depolarization from the sinoatrial node proceeds across the atria from the top, while the depolarization from the atrioventricular node is carried to the bottom of the ventricles before it emanates over the ventricular tissue.
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