Quiz of the Physiology of Pancreas

What is the primary function of insulin?

• Stimulate glucagon secretion

• Increase uptake of glucose and amino acids

• Decrease glucose uptake in tissues

• Increase blood glucose levels

Which cells in the pancreas secrete glucagon?

• Beta cells

• Alpha cells

• Delta cells

• F cells

What is the main action of somatostatin?

• Enhance glycogen synthesis

• Increase glucose production

• Inhibit both insulin and glucagon secretion

• Stimulate insulin secretion

What is the effect of glucagon on the liver?

• Decreases glucose output

• Inhibits gluconeogenesis

• Increases glycogen synthesis

• Stimulates glycogenolysis

Which hormone is primarily responsible for lowering blood glucose levels?

• Pancreatic polypeptide

• Insulin

• Somatostatin

• Glucagon

What triggers the release of insulin?

• High blood glucose levels

• Low blood glucose levels

• Exercise

• Fasting

What is the half-life of insulin in circulation?

• 1 hour

• 5 minutes

• 1 minute

• 30 minutes

Which of the following is a characteristic of Type I diabetes?

• High insulin receptor sensitivity

• Insulin resistance

• Autoimmune destruction of beta cells

• Overproduction of insulin

What is the role of glucagon during fasting?

• Increases blood glucose levels

• Promotes fat storage

• Decreases glucose production

• Stimulates insulin secretion

Which hormone is secreted by the F (PP) cells?

• Pancreatic polypeptide

• Insulin

• Glucagon

• Somatostatin