<P> The pancreas releases glucagon when the concentration of glucose in the bloodstream falls too low . Glucagon causes the liver to convert stored glycogen into glucose , which is released into the bloodstream . High blood - glucose levels , on the other hand , stimulate the release of insulin . Insulin allows glucose to be taken up and used by insulin - dependent tissues . Thus , glucagon and insulin are part of a feedback system that keeps blood glucose levels stable . Glucagon increases energy expenditure and is elevated under conditions of stress . Glucagon belongs to the secretin family of hormones . </P>
<P> The pancreas releases glucagon when the concentration of glucose in the bloodstream falls too low . Glucagon causes the liver to convert stored glycogen into glucose , which is released into the bloodstream . High blood - glucose levels , on the other hand , stimulate the release of insulin . Insulin allows glucose to be taken up and used by insulin - dependent tissues . Thus , glucagon and insulin are part of a feedback system that keeps blood glucose levels stable . Glucagon increases energy expenditure and is elevated under conditions of stress . Glucagon belongs to the secretin family of hormones . </P>
high blood glucose levels stimulate the release of
high blood glucose levels stimulate the release of
insulin
insulin