sinoatrial node編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看sinoatrial nodesinoatrial node — 名詞名詞1. a group of cells in the heart that controls the heartbeat1.名詞釋義竇房結a group of cells in the heart that controls the heartbeat例句The sinoatrial node sends electrical signals to make the heart beat.