Question

7. Describe the physiological response to a fall in blood glucose levels (hypoglycaemia).

Please give a detailed answer. Add supportive equation if possible.

Answer 1

Whenever there is hypoglycemia, then glucagon is secreted from pancreas. Glucagon is secreted form the A cells in the islets of Langerhans of pancreas.

Important factor that regulates the secretion of glucagon is the decrease in blood glucose level. When blood glucose level decreases below 80mg/DL of blood, A cells of islet of Langerhans are stimulated and more glucagon is released.

Glucagon increase glycogenolysis in liver and thus increases blood going into the blood from liver.

Glucagon also increases gluconeogenesis in liver and thus more glucose is produced in liver which ultimately comes to blood.