Describe Physiological Regulation

Explain why Sterling and Eyer felt it was necessary to coin a new term to describe physiological regulation, namely allostasis. What was homeostasis unable to explain that required a new idea to account for? What does the principle of allostasis take into account and explain that cannot be explained by a homeostatic model? What, for you, are the implications of this – for teaching, for thinking about the subject, and for medical practice?