sinoatrial node
英
美
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Noun:
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a specialized bit of heart tissue that controls the heartbeat
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用作名词 (n.)
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Activation of the heart normally begins in the sinoatrial node.
在正常情况下,心脏的活动始于窦房结。
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When the sinoatrial node starts to malfunction it can cause dangerously slow or erratic rhythms to develop.
窦房结出了问题,心律会变缓或变紊乱,这很危险。
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