Atrioventricular block

atrioventricular block

atrioventricular block n.
Impairment of the normal conduction of impulses between the atria and the ventricles.


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  • Atrioventricular bundle

    a bundle of specialized muscle fibers regulating the heartbeat by conducting impulses from the right atrium to the ventricles. atrioventricular bundle n. See atrioventricular trunk.

  • Atrioventricular canal

    atrioventricular canal atrioventricular canal n. The canal in the embryonic heart joining the atrium to the ventricle.

  • Atrioventricular canal cushion

    atrioventricular canal cushion atrioventricular canal cushion n. Either of a pair of mounds of embryonic connective tissue covered by endothelium, bulging dorsally and ventrally into the embryonic atrioventricular canal, eventually growing together and dividing the canal into right and left atria. Also called endocardial cushion.

  • Atrioventricular conduction

    atrioventricular conduction atrioventricular conduction n. Abbr. Forward conduction of the cardiac impulse from the atria to ventricles via the atrioventricular node, represented in an electrocardiogram by the P-R interval.

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