Last Updated
：2025/12/05
sinoatrial node
（ plural ）
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(anatomy) A group of cells located in the wall of the right atrium of the heart that originates the impulses stimulating the heartbeat.
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sinoatrial node
The sinoatrial node generates electrical impulses that coordinate the heart's rhythm.
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The sinoatrial node generates electrical impulses that coordinate the heart's rhythm.
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