atrioventricular node

noun

Definition of atrioventricular node

: a small mass of tissue in the right atrioventricular region of higher vertebrates through which impulses from the sinus node are passed to the ventricles

First Known Use of atrioventricular node

1908

in the meaning defined above

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Medical Dictionary

atrioventricular node

noun

medical Definition of atrioventricular node

: a small mass of tissue that is situated in the wall of the right atrium adjacent to the septum between the atria, passes impulses received from the sinoatrial node to the ventricles by way of the bundle of His, and in some pathological states replaces the sinoatrial node as pacemaker of the heart

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