Hormone pathway: Blood glucose level (low glucose levels)

• Stimulus: During fasting or after exercise, blood glucose levels drop 
• Pancreas detects low glucose levels
• Alpha cells in the pancreas release glucagon into the bloodstream
• Glucagon signals the liver to convert glycogen into glucose ‘gluconeogenesis’
• ‘Gluconeogenesis’: the liver produces new glucose from non carbohydrate sources
• Response: Glucose is released into the bloodstream, Blood glucose levels rise to provide energy for the body 
• Feedback: as blood glucose levels normalise, glucagon secretion decreases, maintaining balance