the role of adrenaline

• as adrenaline circulates the body, it brings about several physiological changes that are known collectively as the ‘fight-or-flight’ response.
• increased heart rate = pushes blood to the muscles, heart and other vital organs
• constricts blood vessels, increasing rate of blood flow and raising blood pressure = pushes blood to the muscles, heart and other vital organs
• diverts blood away from the digestive system = conserves energy in preparation of fight-or-flight
• increases blood to brain and skeletal muscles = allows for increased physical activity and rapid response planning
• increased respiration = take in as much oxygen as possible