Letter A

Atrioventricular (AV)

5 views

Pertaining to the atria (the upper chambers of the heart) and the ventricles (the lower chambers of the heart).

The AV node is an electrical relay station between the atria and the ventricles.

Electrical signals from the atria must pass through the AV node to reach the ventricles.

The AV node is a major element in the cardiac conduction system that generates electrical impulses within the heart, conducts them throughout the muscle of the heart, stimulates the heart to contract and pump blood, and so controls the heart rate.

Share this definition

Medical disclaimer

The information on this page is for educational and informational purposes only and does not constitute medical advice in any way.

  • It does not replace the advice of a physician, pharmacist or other healthcare professional.
  • It does not represent a prescription of drugs, diagnostic exams or therapies.
  • In case of symptoms, doubts or concerns about your health, always consult a qualified physician.

In case of emergency call 911 (US) or 112 (EU).