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Key Physiological Systems in the Stress Response
The body's physiological reaction to stress is complex, primarily orchestrated by two major systems: the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. The SNS provides a rapid response to a perceived threat, while the HPA axis, being endocrine-based, reacts more slowly.
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Ch.14 Stress, Lifestyle, and Health - Psychology @ OpenStax
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Hypothalamic-Pituitary-Adrenal (HPA) Axis
A hiker unexpectedly confronts a bear on a trail, causing an immediate surge of adrenaline and a racing heart. Even after the bear has left and the hiker is safe, they feel 'on edge' and mentally taxed for the rest of the day. Which statement best analyzes the involvement of the two primary physiological stress systems in this two-part experience?