Insulin and Glucagon Functions

The video provides an overview of the pancreas, focusing on its dual role as an exocrine and endocrine gland. It details the functions of insulin and glucagon, hormones secreted by the pancreas, in regulating blood glucose levels. Insulin decreases blood glucose by promoting glycogenesis and glucose uptake, while glucagon increases it through gluconeogenesis and glycogenolysis. The video also highlights the antagonistic relationship between these hormones and their synergistic interaction with epinephrine and norepinephrine.

Where is the pancreas located in relation to the stomach?

• Below the stomach

• Above the stomach

• Behind the stomach

• In front of the stomach

What type of gland is the pancreas classified as?

• Exocrine gland

• Endocrine gland

• Heterocrine gland

• Paracrine gland

What hormone is secreted by the pancreatic beta cells?

• Glucagon

• Adrenaline

• Insulin

• Cortisol

Which organ does insulin primarily target to promote glycogenesis?

• Lungs

• Kidneys

• Liver

• Heart

What is the primary stimulus for insulin secretion from beta cells?

• Low glucose levels

• High glucose levels

• Low fatty acid levels

• High amino acid levels

What hormone is secreted by the pancreatic alpha cells?

• Insulin

• Glucagon

• Adrenaline

• Thyroxine

What process does glucagon stimulate in the liver to increase blood glucose levels?

• Gluconeogenesis

• Glycogenesis

• Protein synthesis

• Lipogenesis

How do insulin and glucagon interact in terms of blood glucose regulation?

• They both decrease blood glucose

• They work synergistically

• They work antagonistically

• They have no interaction

Which hormones act synergistically with glucagon?

• Insulin and cortisol

• Cortisol and adrenaline

• Norepinephrine and epinephrine

• Thyroxine and insulin

What is the overall effect of insulin on blood glucose levels?

• Fluctuates blood glucose levels

• No effect on blood glucose levels

• Decreases blood glucose levels

• Increases blood glucose levels