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GLYCAEMIA is the concentration of sugar in the blood. This concentration lies between 0.8 g and 1 g per litre. Glycaemia is regulated by the LIVER which stores 120 g of glycogen, released regularly according to requirements. In a fasting subject, the amount of glycogen released from the liver is 3 mg per kg of body weight per minute. During digestion, the release of glycogen from the liver is blocked since the body takes its supplies directly from the intestines. Once the liver reserves have been built up again, some glycogen is stored in the lipocytes (fat cells), which will later be catabolised to release energy. The (hypoglycaemic) hormone used to regulate the release of glycogen into blood is the insulin. A deficiency of this hormone leads to diabetes.
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