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  1. www.health.harvard.edu › staying-healthyUnderstanding the stress response - Harvard Health

    Apr 3, 2024 · The stress response begins in the brain (see illustration). When someone confronts an oncoming car or other danger, the eyes or ears (or both) send the information to the amygdala, an area of the brain that contributes to emotional processing. The amygdala interprets the images and sounds. When it perceives danger, it instantly sends a distress ...

    • hhp_info@health.harvard.edu

  2. www.ncbi.nlm.nih.gov › books › NBK541120Physiology, Stress Reaction - StatPearls - NCBI Bookshelf

    May 7, 2024 · Any physical or psychological stimuli that disrupt homeostasis result in a stress response. The stimuli are called stressors, and physiological and behavioral changes in response to exposure to stressors constitute the stress response. A stress response is mediated through a complex interplay of nervous, endocrine, and immune mechanisms, activating the sympathetic-adreno-medullar (SAM) axis ...

    • Brianna Chu, Komal Marwaha, Terrence Sanvictores, Derek Ayers
    • 2024/05/07
    • 2019

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  4. www.verywellhealth.com › general-adaptationGeneral Adaptation Syndrome (GAS): Stages and Triggers

    Feb 3, 2024 · Summary. General adaptation syndrome (GAS) describes the process your body goes through when you are exposed to any kind of stress, positive or negative. It has three stages: alarm, resistance, and exhaustion. If you do not resolve the stress that has triggered GAS, it can lead to physical and mental health problems.

    • Ruth Edwards

  5. www.healthline.com › health › general-adaptationGeneral Adaptation Syndrome: Your Body’s Response to Stress

    Oct 6, 2018 · General adaptation syndrome stages. 1. Alarm reaction stage. The alarm reaction stage refers to the initial symptoms the body experiences when under stress. You may be familiar with the “fight ...

    • Valencia Higuera

  6. brain.harvard.edu › hbi_news › uncovering-detailsUncovering Details Behind the Body’s Response to Stress

    However, a dysregulated stress response of the body as a result of chronic stress or traumatic experiences can be damaging for the brain and promote susceptibility to mood and anxiety disorders. Glucocorticoids orchestrate the activity of the HPA axis and neuronal circuits via the glucocorticoid receptor (GR, encoded by the Nr3c1 gene) and the mineralocorticoid receptor (MR, encoded by the ...

  7. www.simplypsychology.org › stress-biologyWhat is the Stress Response - Simply Psychology

    Nov 9, 2023 · Stress is a biological and psychological response experienced upon encountering a threat that we feel we do not have the resources to deal with. A stressor is a stimulus (or threat) that causes stress, e.g., an exam, divorce, the death of a loved one, moving house, or loss of job. Sudden and severe stress generally produces: Increase in heart ...

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  9. www.stress.org › news › understanding-the-bodysUnderstanding the Body’s Stress Response

    Jul 8, 2022 · When your body senses danger, it activates the body’s sympathetic nervous system (SNS) to help maintain homeostasis (stability when adapting to change). This system also helps prepare you to handle the danger, whether real or perceived. 2. The SNS is involved in the body’s stress response. It releases the stress hormones adrenaline and ...