SA node

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Related to SA node: AV node
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.SA node - a specialized bit of heart tissue that controls the heartbeat
cardiac muscle, heart muscle - the muscle tissue of the heart; adapted to continued rhythmic contraction
References in periodicals archive ?
The SA node acts as the heart's natural "pacemaker," sending electrical signals that produce a synchronized, steady heart rhythm.
The artery of SA node is an atrial branch distributed to both atria, mainly the right.
The student gave a presentation of his research into the "effects of streptozotocin-induced type-1-diabetes on the SA node of mice heart", at the British Societys headquarters in Leeds in the UK.
Syncope may occur with a rapid supraventricular tachycardia or ventricular tachycardia, usually as a result of a fall in cardiac output, or it may occur after termination of the tachycardia because of overdrive suppression of the SA node.
Constant P-to-P intervals are an important characteristic of all types of second-degree heart block and result from the impulse originating in the SA node.
The electrical signals originating from the pace maker of the heart, SA node, governs the heart rate, i.
The SA node releases an impulse of depolarization (electricity) that is conducted through both the right and left atrium, causing them to contract.
First-degree SA nodal block is due to prolongation of conduction time between the SA node impulse and depolarization of the rest of the RA (designated by the P wave on ECG).
To prevent anarchy in the heart's electrical system, the pacemaker in the right atrium, the SA node, drives the show Specialized conductive tissue transmits impulses initiated at the SA node to the AV node near the ventricle and then throughout the heart muscle.
SA node is the natural pacemaker of the heart, controlling the rhythm of the heart by sending electrical impulses.