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Hello students, homeostasis helps body to maintain a stable internal environment.
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Homeostasis is a condition in which the internal environment of the body remains relatively constant despite changes in external environment.
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These homeostasis include positive and negative feedback loop.
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The best example to explain the negative feedback loop is the regulation of blood glucose level by the action of hormone insulin.
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There are two stimulation first is when blood glucose rises.
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This will stimulate beta cells of pancreas to secrete insulin.
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Then this insulin will go and bind to the receptors which makes the body cells to take up glucose and result is that the blood glucose will drop down.
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There is another stimulus when blood glucose is reduced.
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This is the case when the person is on fasting or if the person is not having enough food.
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So in this case cells of pancreas will secrete glucagon which will break down into glucose by the help of liver and then this is how blood glucose will rise.
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This is nothing but homeostasis where the glucose level that is 90 mg per 100 ml is the set point.
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This is how blood glucose is maintained.
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