Fight-or-flight reactions cause activation of

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(C) The 'fight-or-flight' response is a physiological reaction that occurs in response to a perceived harmful event,attack,or threat to survival.This

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

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(C) The 'fight-or-flight' response is a physiological reaction that occurs in response to a perceived harmful event,attack,or threat to survival.This response is primarily mediated by the sympathetic nervous system.When the body perceives a threat,the sympathetic nerves stimulate the adrenal medulla.The adrenal medulla then secretes catecholamines,specifically epinephrine (adrenaline) and norepinephrine (noradrenaline),into the bloodstream.These hormones prepare the body for immediate physical action by increasing heart rate,dilating airways,and mobilizing energy reserves.

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