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diving reflex

noun

, Physiology.
  1. a reflex of humans, other mammals, reptiles, and birds, triggered by immersion in cold water, that slows the heart rate and diverts blood flow to the brain, heart, and lungs: serves to conserve oxygen until breathing resumes and to delay potential brain damage.


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Word History and Origins

Origin of diving reflex1

First recorded in 1975–80
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Example Sentences

The diving reflex instinct seems to disappear by six months in most cases.

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