Homeostasis in physiology is defined as the dynamic state of internal stability maintained by living organisms through the regulation of physiological variables. This core principle relies on the continuous monitoring and adjustment of internal conditions via sensor-effector pathways to maintain variables within a narrow, viable set point despite external perturbations. The concept operates strictly within the domain of comparative physiology and cellular biology, serving as the foundational theorem for understanding systemic regulatory architecture.
Prerequisite chain context: requires Chemical Receptors and Cell Signaling in Biology.