<unk>  is the property of an open system, especially living organisms, to reform its functions to maintain a meaningful condition, by means of multiple dynamic equilibrium adjustments, controlled by interrelated regulation mechanisms. The term was coined from the Greek trans (across, beyond, on the opposite side) and stasis (to stand, posture).
The term is born in the sense of biological<unk>  but most often used in the sense of sociological<unk> . Multicellular organisms require transistatic new functions in order to live beyond the reformations of the outside world ; many environmentalists believe this principle also applies to the internal environment.
Many ecological, biological, and social systems are homeostatic and transistatic. They almost oppose change to maintain equilibrium but sometimes chose change to keep or get some functions or profits. If the system does not succeed in reestablishing its balance and functions, it may ultimately lead the system to stop functioning.
Complex systems, such as a human body, must have homeostasis and<unk>  to maintain stability and to survive. These systems do not only have to endure to survive; they must adapt themselves and evolve to modifications of the environment.
Thermoregulation
The skeletal muscles can shiver to produce heat if the body temperature is too low.
Non-shivering thermogenesis involves the decomposition of fat to produce heat.
Sweating cools the body with the use of evaporation.
Chemical regulation
The pancreas produces insulin and glucagon to control blood-sugar concentration.
The lungs take in oxygen and give off carbon dioxide.
The kidneys remove urea, and adjust the concentrations of water and a wide variety of ions.
The skeletal muscles can shiver to produce heat if the body temperature is too low.
Non-shivering thermogenesis involves the decomposition of fat to produce heat.
Sweating cools the body with the use of evaporation.
The pancreas produces insulin and glucagon to control blood-sugar concentration.
The lungs take in oxygen and give off carbon dioxide.
The kidneys remove urea, and adjust the concentrations of water and a wide variety of ions.
Most of these organs are controlled by hormones secreted from the pituitary gland, which in turn is directed by the hypothalamus.
The term has come to be used in other fields, as well.
An actuary may refer to risk homeostasis, where (for example) people who have anti-lock brakes have no better safety record than those without anti-lock brakes, because they unconsciously compensate for the safer vehicle via less-safe driving habits. Previously, certain maneuvers involved minor skids, evoking fear and avoidance: now the anti-lock system moves the boundary for such feedback, and behaviour patterns expand into the no-longer punitive area.
Sociologists and psychologists may refer to stress homeostasis, the tendency of a population or an individual to stay at a certain level of stress, often generating artificial stresses if the "natural" level of stress is not enough.
Transistasis
Subluxation
Splenosis
Volvulus
Degranulation
Misty mesentery
Adhesion 
Retroperitoneal fibrosis