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Homeostasis vs Allostasis - What's the difference?

homeostasis | allostasis |

As nouns the difference between homeostasis and allostasis

is that homeostasis is the ability of a system or living organism to adjust its internal environment to maintain a state of dynamic constancy; such as the ability of warm-blooded animals to maintain a stable temperature while allostasis is the process of achieving stability, or homeostasis, in the body, through physiological or behavioral change.

homeostasis

Alternative forms

* homoeostasis (UK) * (dated)

Noun

(homeostases)
  • (physiology) The ability of a system or living organism to adjust its internal environment to maintain a state of dynamic constancy; such as the ability of warm-blooded animals to maintain a stable temperature.
  • * 2011 , Professional Guide to Pathophysiology , Lippincott, Williams, & Wilkins, page 1:
  • When homeostasis is disrupted by an external stressor - such as injury, lack of nutrients, or invasion by parasites or other organisms - illness may occur.
  • Such a dynamic equilibrium or balance.
  • Derived terms

    * homeostatic * metal homeostasis

    allostasis

    Noun

    (-)
  • The process of achieving stability, or homeostasis, in the body, through physiological or behavioral change.
  • * {{quote-news, year=2009, date=August 18, author=Natalie Angier, title=Brain Is a Co-Conspirator in a Vicious Stress Loop, work=New York Times citation
  • , passage=This system of so-called allostasis , of maintaining control through constant change, stands in contrast to the mechanisms of homeostasis that keep the pH level and oxygen concentration in the blood within a narrow and invariant range. }}