sinoatrial node


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Related to sinoatrial node: atrioventricular node, bundle of His
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  • noun

Synonyms for sinoatrial node

a specialized bit of heart tissue that controls the heartbeat

References in periodicals archive ?
Specifics of the blood supply of the sinoatrial node.
The atria and ventricles beat independent of each other under the control of a separate pacemaker foci: one in the sinoatrial node and the other in the AV junction.
For over a decade, teams of researchers have worked to create a biological alternative that might help those kinds of patients, trying such approaches as using stem cells to spur the growth of a new sinoatrial node.
Near the end of this phase, the sinoatrial node emits an electric impulse.
A new study by a group led by Catherine Proenza, PhD and Roger Bannister, PhD from the University of Colorado School of Medicine reports that one of the reasons for the age-dependent reduction in maximum heart rate is that aging depresses the spontaneous electrical activity of the heart's natural pacemaker, the sinoatrial node.
The heartbeat originates in the sinoatrial node of the heart's right upper chamber, where pacemaker cells are clustered.
The right vagus nerve innervates the sinoatrial node, and parasympathetic hyperstimulation predisposes those affected to bradyarrhythmias; the left vagus nerve when hyperstimulated predisposes the heart to atrioventricular (AV) blocks, but these facts do not affect our results because we recorded average heart rate variability for 5 minutes before and after gagging.
Her past medical history included hypertension, stage 4 chronic kidney disease, bio-prosthetic aortic valve replacement and a permanent cardiac pacemaker for sinoatrial node disease.
The sinoatrial node, a heterogeneous pacemaker structure.
In healthy subjects the sinoatrial node located at the posterior wall of the right atrium initiates each beat of the heart.