When faced with sudden stress, the sympathetic nervous system causes the adrenal glands (located anterior to the kidneys in the human body) to release adrenaline. This hormone (which travels through the bloodstream) increases heart rate and blood pressure and triggers the “fight-or-flight” response in the human body. Describe a “fight” or “flight” situation that you have experienced, and note how you reacted (mentally and physically) to the stressor.