Atrioventricular canal

atrioventricular canal

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


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  • 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.

  • Atrioventricular dissociation

    atrioventricular dissociation atrioventricular dissociation n. A condition in which the atria and ventricles contract independently, especially as resulting from the slowing of an atrial pacemaker or the acceleration of a ventricular pacemaker.

  • Atrioventricular extrasystole

    atrioventricular extrasystole atrioventricular extrasystole n. A premature contraction of the heart in which the stimulus arises from either the A-V node or A-V bundle. Also called A-V extrasystole.

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