Homeostasis In Biology
Introduction Homeostasis is the ability to maintain a constant internal environment in response to environmental changes. It is a unifying principle of biology. The nervous and endocrine systems control homeostasis in the body through feedback mechanisms involving various organs and organ systems.
Homeostasis in body A simple example of homeostasis is the body's ability to maintain an internal temperature around 98.6 degrees Fahrenheit, whatever the temperature outside. Regulation of body temperature, blood pressure, pH, and glucose concentration are four examples of how the body maintains homeostasis.
Principles of Homeostasis
Skin and Homeostasis Skin functions in homeostasis include protection, regulation of body temperature, sensory reception, water balance, synthesis of vitamins and hormones, and absorption of materials. Some of the changes in body associated with the skin are: Too cold: hair stands up (goose bumps), vasoconstriction decreases blood supply at skin (less heat loss). Too hot: sweat (evaporative cooling), vasodilation increases blood supply at skin (more heat loss).
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