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Sinoatrial node: a specialized bit of heart tissue that controls the heartbeat
Source: WordNet 2.1
Sinoatrial node : The small mass of modified cardiac muscle fibers located at the junction of the superior vena cava (VENA CAVA, SUPERIOR) and right atrium. Contraction impulses probably start in this node, spread over the atrium (HEART ATRIUM) and are then transmitted by the atrioventricular bundle (BUNDLE OF HIS) to the ventricle (HEART VENTRICLE).
Source: MESH OBO (Open Biomedical Ontologies)
Sinoatrial node: The sinoatrial node is a part of the electrical conduction system of the heart. The sinoatrial node is located in the wall of the heart's right atrium and is the "pacemaker" of the heart. The sinoatrial node initiates electrical impulses that spread through the atria via the internodal pathways, causing the atria to contract and squeeze blood into the ventricles.
Conditions that afflict the sinoatrial node include sinus node arrest, sinus node dysfunction, cardiac arrhythmias, atrial fibrillation, ventricular fibrillation, tachydysrhythmias, bradydysrhythmias, heart blocks, myocardial infarction, and cardiac arrest.
The following organs are closely related to the organ: Sinoatrial node:
The following conditions are related to the organ: Sinoatrial node:
The following are other names for the organ: Sinoatrial node:
These symptoms are related to afflictions of the organ: Sinoatrial node:
Condition count: 1 ; see list below.
Organ types: Heart (55)
Related organs: heart (55)
Organs: list of all organs
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