Catecholamines are hormones secreted by the adrenal medulla that cause rapid physiological arousal, helping to mobilize the body's resources to flee or fight an immediate threat to survival.

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This statement is true. Catecholamines, such as adrenaline and noradrenaline, are released in response to stress or danger and prepare the body for fight or flight by increasing heart rate, respiration, and blood pressure, among other responses.

Catecholamines Are Hormones Secreted by the Adrenal Medulla That Cause