Sympathetic Nervous System:The part of the autonomic nervous system responsible for activating the fight-or-flight response, increasing heart rate, blood pressure, and energy mobilization.
Stress Response: The body's immediate reaction to a perceived harmful event, attack, or threat to survival, which triggers the fight-or-flight response.
Adrenal Glands:The endocrine glands that release hormones like adrenaline and cortisol, which play a key role in the physiological changes associated with the fight-or-flight response.