Temperature and glucose blood levels regulation involve negative feedback:
- a
change from normal conditions (body temperature, blood glucose
levels…)
- triggers a sensor,
- stimulates a response in an effector.
Glucose blood levels regulation
- If glucose levels rise, the sensor will instruct an effector (the pancreas) to secret insulin ---> glucose levels drop below normal.
- If glucose levels drop, the sensor will instruct the pancreas to stop secreting insulin ---> glucose levels rise.
- This is negative feedback – the change is fed back to the effector.
Temperature regulation
- All the time, the hypothalamus is monitoring small changes in the temperature of your blood.
- If temperature rise above normal, actions take place that help to reduce it.
- If temperature is lower than normal, the hypothalamus stops these actions and start actions that help to raise the blood temperature.
- This is negative feedback - the information that the blood has cool down stop the hypothalamus making your skin to increase heat loss.
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