The adrenal glands play a crucial role in the body's stress response by producing hormones such as cortisol and adrenaline. During stressful situations, these glands release these hormones into the bloodstream, triggering the fight-or-flight response. This physiological reaction prepares the body to face or flee from threats, increasing heart rate, elevating blood pressure, and enhancing energy availability. By regulating stress hormones, the adrenal glands help maintain homeostasis and influence various bodily functions during stress, including metabolism and immune response.