B2(ii) - Enzymes and Homeostasis 7.

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Controlling Blood Sugar.

Blood Sugar is also controlled as part of Homeostasis. Insulin is a hormone that controls how much sugar there is in your blood.

Insulin Controls Blood Sugar Levels.

1) Eating foods containing carbohydrates puts glucose into the blood from the gut.

2) Normal metabolism (reactions) of cells removes glucose from the blood.

3) Vigorous exercise also removes a lot of glucose from the blood.

4) Levels of glucose in the blood must be kept steady. Changes in blood glucose are monitored and controlled by the pancreas, using the hormones insulin.

BLOOD GLUCOSE LEVEL GETS TOO HIGH INSULIN IS ADDED.

1) Blood with too much glucose in it.

2) Insulin secreted by pancreas.

3) Too much glucose with insulin as well.

4) Insulin makes liver store glucose.

5) Glucose removed by liver.

6) Blood glucose decreased.

BLOOD GLUCOSE LEVEL GETS TOO LOW INSULIN IS NOT ADDED.

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