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noun

bloodstream

CEFR B2

the blood flowing through the circulatory system

In a sentence

Six example sentences with bloodstream, each labelled with its topic.

  • The drug reaches the bloodstream within minutes of the injection, which is why the nurse monitors her pulse so closely.

    Medicine

  • Caffeine taken an hour before the race is already circulating in the bloodstream when the starting gun fires.

    Fitness

  • Researchers tagged the molecule so they could track its path through the bloodstream of a mouse for six hours.

    Science

  • Adrenaline enters the bloodstream within seconds of a fright, which is why the heart races before the mind catches up.

    Psychology

  • Researchers found plastic particles in the bloodstream of nearly every volunteer, traced partly to bottled water.

    Environment

  • Fat slows the rate at which sugar reaches the bloodstream, which is why dessert after a meal spikes less than on its own.

    Cooking

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