Glucagon's role in the body is to prevent blood glucose levels dropping too low. To do this, it acts on the liver in several ways: It stimulates the conversion of stored glycogen (stored in the liver) to glucose, which can be released into the bloodstream. This process is called glycogenolysis.
Within the liver, glucose becomes stored as a complex sugar (polysaccharide) called glycogen. ... Glucagon serves an additional function as well, which is to signal the release of stored fats within the liver through a process known as lipolysis.
