Lecture No 01|| Concept Of Homeostasis Class 12 In Urdu Hindi By Mr.Hadi || Chapter No 15

Homeostasis 2nd Year Biology By Hadi. Lecture No 01 Of Chapter No 15 "Homeostasis"
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Definition:
Homeostasis is the tendency to resist change in order to maintain a stable, relatively constant internal environment.
Examples:
Blood glucose homeostasis.
Blood oxygen content homeostasis.
Extracellular fluid pH homeostasis.
Plasma ionized calcium homeostasis.
Arterial blood pressure homeostasis.
Core body temperature homeostasis.
The volume of body water homeostasis.
Extracellular sodium concentration homeostasis.
Concept Of Homeostasis:
The concept of homeostasis refers to the ability, present in all living organisms, of continuously maintaining certain functional variables within a range of values compatible with survival.
Importance Of Homeostasis:
Homeostasis maintains optimal conditions for enzyme action throughout the body, as well as all cell functions. It is the maintenance of a constant internal environment despite changes in internal and external conditions. In the human body, these include the control of: blood glucose concentration.
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Sir Removal of Nitrogenous waste is called elimination and removal of Metabollicaly wastes is called excretion...

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Homeostasis means keeping the internal conditions normal of living body.

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Excretion refers to the process by which metabolic waste are removed from the body.elimination include removel undigested food residues and other substances from the body

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