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  • word of the day

    atrioventricular valve

    atrioventricular valve - 365bet中国官方网站 definition and meaning for word atrioventricular valve

    Definition
    (noun) either of two heart valves through which blood flows from the atria to the ventricles; prevents return of blood to the atrium

  • Word used in video below:
    text: maybe we don't need this saturn valve
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