Regulate blood glucose concn

• Fasting/starving

  1. Blood glucose concn decreases below normal
  2. Stimulus is detected by islets of langerhans in pancreas
  3. islets of langerhans secrete more glucagon to bloodstream to liver and muscles
  4. Corrective mechanisms:
  5. Stimulate liver to convert glycogen -> glucose, so there is increased glucose in body
  6. stimulate liver to convert fats, amino acids and lactic acid to glucose
  7. blood glucose cocn increase back to normal and glucagon is destroyed by the liver
• Eating a meal rich in carbohydrates causes blood glucose concentration to increase above normal.
• The stimulus for increased blood glucose concentration is detected by the islets of Langerhans in the pancreas.
• The islets of Langerhans secrete more insulin into the bloodstream to the liver and muscles.
• Corrective mechanisms for increased blood glucose concentration include stimulating the liver to convert excess glucose into glycogen, which is stored in the liver, leading to increased uptake of glucose in cells.
• Increasing cell membrane permeability to glucose also increases the uptake of glucose in cells.
• Increasing the rate of respiration also increases the uptake of glucose in cells.
• Blood glucose concentration decreases back to normal and insulin is destroyed in the liver.