Saturday, January 16, 2010

How the negative feedback controls blood glucose levels?

get the negative= decrease in glucose levels...How the negative feedback controls blood glucose levels?
Your hypothalamus has glucose detecting neurones. when your blood sugar level is high the hypothalamus stimulates insulin production.


Insulin converts glucose to glycogen. This decreases the blood sugar level and the change is detected by the hypothalamus.


It then stops stimulating insulin production.


This 'switching off' of the hormone is negative feedback.





If if didn't occur, your blood sugar would drop dramatically, making you hypoglycaemic (explained here: http://en.wikipedia.org/wiki/Hypoglycemi鈥?/a>How the negative feedback controls blood glucose levels?
Negative feedback, opposing to positive feedback, stops a reaction, rather than promoting a reaction. Insulin, secreted from the pancreas, is a hormone that regulates blood sugar levels, and it tells your body to make more glucose for your blood. When you eat, the glucose comes in and adds more to what you already have. The glucose level of your body rises, telling the pancreas to stop secreting insulin and telling your body to stop making more glucose, producing a negative feedback.

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