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Blood Glucose Level Maintenance
When blood glucose is at a normal level in the body, homeostasis is being maintained. A rise or decline in the level of blood glucose creates a homeostatic imbalance and the level must be regulated.
If blood glucose rises and causes an imbalance, a signal is sent to the pancreas. The pancreas secretes insulin, which stimulates glucose uptake by the cells of the body and glycogen formation in the liver. As a result, blood glucose levels fall to a normal range and homeostasis is maintained once more.
If blood glucose declines and causes an imbalance, a signal is sent to the pancreas. The pancreas secretes glucagon, which stimulates glycogen breakdown in the liver. The blood glucose level rises and returns to a normal range. Homeostasis is restored.