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Physiology Textbooks Boundless Anatomy and Physiology Endocrine System Stress
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Physiology
Concept Version 13
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The Stress Response

Mechanism of stress and stress response

Mechanism of stress and stress response

The hypothalmic-pituitary-adrenal (HPA) axis is an endocrine cascade that mediates several aspects of physiological stress, including responses to acute stressors (i.e., fight-or-flight response) but it also causes chronic stress. 

This is a diagram of the mechanism of stress and stress response in the HPA axis. The hypothalamus secretes corticotropin releasing hormone and the anterior pituitary responds by releasing adrenocortictotropic hormone, that causes the adrenal cortex to activate a physical response.

Source

    Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:

    "Basic HPA Axis."
    http://en.wikipedia.org/wiki/File:Basic_HPA_Axis.jpeg Wikipedia CC BY-SA.
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