Question

Glucagon produced by $\alpha$-cells of islets of Langerhans,

• A. Converts glucose to glycogen
• B. Converts glycogen to glucose
• C. Decreases concentration of glucose in blood
• D. None of the above
  

Answer 1

The correct option is B Converts glycogen to glucose

Glucagon is a peptide hormone. It is secreted from the αα-cells of islets of Langerhans in pancreas. It increases blood sugar level by acting on hepatocytes and stimulates:

• Breakdown of glycogen (Glycogenolysis i.e. conversion of glycogen into glucose))
• Synthesis of glucose from proteins and fats (Gluconeogenesis)
• Decreased rate of uptake of sugar from blood

So, the correct answer is 'Converts glycogen to glucose'.