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    Biology A-Level

    Adrenaline and fight-or-flight

    What Adrenaline and fight-or-flight means in Biology A-Level, as defined for OCR.

    Definitions of Adrenaline and fight-or-flight

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    Reference: OCR

    The adrenal medulla secretes adrenaline and noradrenaline, which increase heart rate and blood glucose as part of the fight-or-flight response.
    OCR · Hormonal communication (study guide)
    Adrenaline from the adrenal medulla raises heart rate during fight-or-flight.
    OCR · Plant and animal responses (study guide)

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