Atrioventricular node

The electrical signal passes between the atria and ventricles through a group of cells called the atrioventricular (AV) node. The signal slows down as it passes through the AV node. This slowing allows the ventricles enough time to finish filling with blood. On the EKG, this part of the process is the flat line between the end of the P wave and the beginning of the Q wave.

Source: NHLBI (NIH)1

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Atrioventricular Node: A small nodular mass of specialized muscle fibers located in the interatrial septum near the opening of the coronary sinus. It gives rise to the atrioventricular bundle of the conduction system of the heart.2

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Atrioventricular Node: A small mass of specialized cardiac muscle fibers, located near the ostium of the coronary sinus and giving rise to the atrioventricular bundle of the conduction system of the heart.3

Categories for Atrioventricular node

Category of Atrioventricular Node:

  • Heart Part
4

Anatomy Articles

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References

  1. Source: NHLBI (NIH): nhlbi.nih.gov/ health/ health-topics/ topics/ hb/ understanding
  2. Source: MeSH (U.S. National Library of Medicine)
  3. Source: NCI Thesaurus
  4. ibid.

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