atrioventricular (AV) node

(noun)

part of the electrical control system of the heart that coordinates the top of the heart; electrically connects atrial and ventricular chambers

Related Terms

Examples of atrioventricular (AV) node in the following topics:

  • The Cardiac Cycle

    • Closing of the atrioventricular valves produces a monosyllabic "lup" sound.
    • The pulse reaches a second node, the atrioventricular (AV) node, between the right atrium and right ventricle, where it pauses for approximately 0.1 seconds before spreading to the walls of the ventricles.
    • From the AV node, the electrical impulse enters the bundle of His, then to the left and right bundle branches extending through the interventricular septum.
    • The signal is (b) delayed at the atrioventricular node before it is passed on to the (c) heart apex.
    • Summarize the caridac cycle and explain the role of the SA node and the AV node in regulating the its rhythm