Podcast
Questions and Answers
Which hormone is primarily responsible for maintaining blood glucose levels during fasting?
Which hormone is primarily responsible for maintaining blood glucose levels during fasting?
- Glucagon (correct)
- Insulin
- Epinephrine
- Cortisol
What is the main physiological role of glucagon in glucose homeostasis?
What is the main physiological role of glucagon in glucose homeostasis?
- Stimulating insulin secretion
- Promoting glycogenesis in the liver
- Increasing blood glucose levels (correct)
- Inhibiting glucose uptake in peripheral tissues
Which of the following hormones is considered an 'anti-insulin' hormone and acts to increase blood glucose levels?
Which of the following hormones is considered an 'anti-insulin' hormone and acts to increase blood glucose levels?
- Insulin
- Glucocorticoids
- Growth hormone
- All of the above (correct)
What is the primary function of the liver enzyme glucokinase?
What is the primary function of the liver enzyme glucokinase?
Which of the following is a key mechanism by which glucagon maintains blood glucose levels during fasting?
Which of the following is a key mechanism by which glucagon maintains blood glucose levels during fasting?
What is the primary metabolic state in which glucagon secretion is increased?
What is the primary metabolic state in which glucagon secretion is increased?
Which hormone is secreted by the pancreatic beta cells in response to high blood glucose levels, stimulating glucose uptake by skeletal muscle?
Which hormone is secreted by the pancreatic beta cells in response to high blood glucose levels, stimulating glucose uptake by skeletal muscle?
Which hormone secreted by the gut in response to a meal decreases glucagon secretion and inhibits gastric emptying?
Which hormone secreted by the gut in response to a meal decreases glucagon secretion and inhibits gastric emptying?
Which enzyme rapidly inactivates the incretin hormones GLP-1 and GIP?
Which enzyme rapidly inactivates the incretin hormones GLP-1 and GIP?
What is the primary function of the hormone amylin, which is secreted by the pancreatic beta cells?
What is the primary function of the hormone amylin, which is secreted by the pancreatic beta cells?
Which hormone secreted by the pancreatic alpha cells plays a key role in increasing blood glucose levels?
Which hormone secreted by the pancreatic alpha cells plays a key role in increasing blood glucose levels?
At what approximate blood glucose level does glucose stimulate insulin secretion from the pancreatic beta cells?
At what approximate blood glucose level does glucose stimulate insulin secretion from the pancreatic beta cells?
Which of the following is the rate-limiting step that controls glucose-regulated insulin secretion?
Which of the following is the rate-limiting step that controls glucose-regulated insulin secretion?
What is the primary mechanism by which glucose stimulates insulin secretion in β-cells?
What is the primary mechanism by which glucose stimulates insulin secretion in β-cells?
Which of the following is NOT a component of the ATP-sensitive K+ channel in β-cells?
Which of the following is NOT a component of the ATP-sensitive K+ channel in β-cells?
What is the primary function of incretin hormones, such as GLP-1, in relation to insulin and glucagon secretion?
What is the primary function of incretin hormones, such as GLP-1, in relation to insulin and glucagon secretion?
What is the fate of insulin after it is secreted into the portal venous system?
What is the fate of insulin after it is secreted into the portal venous system?
Which of the following is NOT a consequence of insulin binding to its receptor in target tissues?
Which of the following is NOT a consequence of insulin binding to its receptor in target tissues?
