The drugs are normally prescribed to treat attention deficit hyperactivity disorder (ADHD), but healthy students use them to get a leg up in school, by improving focus, concentration and memory.
Adrenaline, or epinephrine, is a hormone that dilates an individual's air passages and increases his heart rate when he is faced with a stressful situation. The hormone is secreted from the adrenal glands to help ensure survival under dangerous situations.
â¢ cortisol or steroids for stress. 2) The inside of each gland (chocolate part of M&M), or the adrenal medulla, secretes the neurotransmitter noradrenaline (also called norephinephrine) and epinephrine (also called adrenaline). Adrenaline causes excitement and stimulation of the circulation and muscular action.