About the homeostatic mechanism of the body following are true, EXCEPT:

Many of homeostatic mechanisms operate on the principle of negative feedback; detions from a given normal set point are detected by a sensor, and signals from the sensor trigger compensatory changes that continue until the set point is again reached. The actual environment of the cells of the body is the interstitial component of the ECF. Normal cell function depends on the constancy of this fluid. The buffering propeies of the body fluids and the renal and respiratory adjustments to the presence of excess acid or alkali are examples of homeostatic mechanisms. Ref: Barrett K.E., Barman S.M., Boitano S., Brooks H.L. (2012). Chapter 2. Overview of Cellular Physiology in Medical Physiology. In K.E. Barrett, S.M. Barman, S. Boitano, H.L. Brooks (Eds), Ganong's Review of Medical Physiology, 24e.