homeostasis

DEFINITION of homeostasis

Homeostasis involves dynamic equilibrium regulated by feedback mechanisms, including receptors that detect changes, control centers like the hypothalamus that process signals, and effectors such as muscles or glands that respond to restore balance. This process ensures optimal functioning for variables like blood glucose, where insulin lowers high levels and glucagon raises low ones, preventing conditions like hyperglycemia or hypoglycemia.

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ETYMOLOGY of homeostasis

greek Coined in 1926 by physiologist Walter Cannon from Greek homeo- (ὅμοιος, homoios, “similar”) meaning “like” or “similar to,” and -stasis (στάσις, stasis, “standing still”) meaning “stopping” or “standing,” conveying “staying the same.” It builds on Claude Bernard’s 19th-century concept of the internal environment (milieu intérieur).

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Related Terms of homeostasis

Allostasis: Adaptive adjustment to anticipated changes, differing from strict homeostasis. Negative feedback: Primary mechanism (e.g., thermoregulation). Positive feedback: Amplifies changes (e.g., labor contractions). Examples: Cytostasis (cell stopping), hemostasis (blood stopping).

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DERIVATIONS of homeostasis

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Query functionality

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Med roots Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms