Blood glucose negative feedback system
- Created by: luigi64
- Created on: 28-02-20 18:52
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- Negative feedback system controlling glucose concentration
- Food is consumed and broken down - rise in blood glucose concentration
- Rise detected by receptors in cell surface membrane of beta cells (coordinator) in the pancreas
- Beta cells secrete insulin
- Rise detected by receptors in cell surface membrane of beta cells (coordinator) in the pancreas
- Food has not been consumed for a while - decrease in blood glucose concentration
- Decrease detected by receptors in cell surface membrane on alpha cells (coordinator) in the pancreas
- Alpha cells secrete glucagon
- Glucagon causes liver cells (effectors) to convert glycogen into glucose (glycogenolysis) and releases this into the blood
- Blood glucose concentration raises to normal level
- Glucagon causes liver cells (effectors) to convert glycogen into glucose (glycogenolysis) and releases this into the blood
- Alpha cells secrete glucagon
- Decrease detected by receptors in cell surface membrane on alpha cells (coordinator) in the pancreas
- Food is consumed and broken down - rise in blood glucose concentration
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