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Glucose concentrations in the blood stream are primarily controlled by the action of two antagonistic pancreatic hormones, insulin and glucagon. Glucose is first detected in the bloodstream by glucose transporter receptors expressed on the surface of specialized pancreatic cells known as alpha- and beta-cells. Beta-cells respond to rising levels of blood glucose by secreting the hormone insulin. Insulin restores normal levels of glucose in the blood by signaling body tissues to take up glucose for energy, or to convert glucose to glycogen and lipids as future energy stored in the liver, muscle and fat cells. In the event of low levels of glucose, the alpha-cells of the pancreas release the hormone glucagon to stimulate skeletal muscle and the liver to breakdown glycogen into glucose and adipose tissue to digest lipids into fatty acids and glycerol. Glucagon also stimulates the liver to synthesize glucose from glycerol in the blood. All these reactions work together to raise glucose levels back to normal.
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biology homework preventing glucose in the urine? describe the homeostatic mechanisms that would normally prevent glucose appearing in the urine its worth 5 marks any help would be great
biology homework preventing glucose in the urine?
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