control of blood glucose concentration

• what organ monitors & controls blood glucose conc?

  pancreas
• what happens when blood glucose levels are too high?

  • pancreas secretes the hormone insulin
  • in liver & muscle cells excess glucose is converted to glycogen for storage
• what happens when blood glucose conc is too low?

  • pancreas secretes the hormone glucagon
  • in liver cells glycogen is converted into glucose & released into the blood
• how is blood glucose conc controlled using a negative feedback loop?

  hormones secreted help bring concentration back to the correct level
• what is type 1 diabetes?

  • pancreas fails to produce sufficient insulin
  • blood glucose levels are high
• how is type 1 diabetes treated?

  insulin injections
• what is type 2 diabetes?

  • body cells stop responding to insulin
• how can type 2 diabetes be treated?

  • carbohydrate controlled diet
  • regular exercise