The amygdala is responsible for interpreting images and sounds. When there is stress, whether real or perceived, a part of the brain known as the amygdala (an area that contributes to emotional processing) decodes sights and sounds. The body’s stress response starts in the brain. When the stressful situation or danger is averted, the impulses sent to the adrenal glands are lowered and the adrenal glands stop the production of adrenaline.Īdrenaline’s response to short-term stress The secretion of adrenaline happens fairly quickly (within 2 to 3 minutes of the body sensing danger). When the body senses danger or a stressful situation, the nerves connected to the adrenal glands get activated and secrete a hormone called adrenaline, also known as epinephrine, to help the body fight or flee a dangerous situation. The sympathetic nervous system activates the body’s fight-or-flight response. It is responsible for the body’s rest-and-digest function. This is located between the spinal cord and the medulla (lower part of the brainstem). It is responsible for the body’s fight-or-flight response and manages this by regulating the heart rate, respiratory rate, etc. This is located in the thoracic and lumbar (upper, middle and lower back) spine region. Its primary aim is to maintain homeostasis and it is divided into the following: It regulates involuntary body functions such as digestion, breathing and excretion. The ANS is a part of the peripheral nervous system. We will also be focusing particularly on the role of adrenaline-the ‘fight-or-flight hormone’-in the body, especially with reference to insulin and blood glucose levels. Before that, however, we need to understand the functioning of the autonomic nervous system (ANS), its components and the roles they play in the human body. Adrenaline is a metabolic hormone that has a deep influence on the cardiovascular system and is considered a hyperglycemic agent.The adrenaline gears the body for the fight-or-flight response, it causes a sharp and short-lived increase in blood sugar levels,.The sympathetic nervous system activates the body’s fight-or-flight response when the body senses danger or a stressful situation and secretes a hormone called adrenaline,.

Adrenaline and high blood pressure