Fight-or-flight reactions cause activation of

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(C) The correct answer is $C$. Fight-or-flight reactions are mediated by the sympathetic nervous system,which triggers the adrenal medulla to secrete

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the adrenal medulla,leading to increased secretion of epinephrine and norepinephrine

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(C) The correct answer is $C$. Fight-or-flight reactions are mediated by the sympathetic nervous system,which triggers the adrenal medulla to secrete catecholamines,specifically epinephrine (adrenaline) and norepinephrine (noradrenaline). These hormones are known as emergency hormones or hormones of fight-or-flight. They prepare the body to deal with stress by increasing heart rate,blood pressure,and blood glucose levels to provide energy for immediate action.

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