What homeostasis is
Cells work well only when the conditions around them stay nearly the same.
Homeostasis
Homeostasis is keeping the internal environment of the body — its temperature, water, blood glucose and more — steady, within narrow limits, even when conditions outside change.
Change detected
→
Control centre
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Correction
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Back to normal
Blood glucose
Kept at 80–120 mg per 100 cm3 of blood
Body temperature
Kept near 37 °C
Water
Kept balanced by the kidneys and ADH