How Insulin and Glucagon Control Blood Glucose Concentration

The video explains how the pancreas regulates blood glucose levels through insulin and glucagon. Insulin decreases blood glucose by promoting glucose uptake and glycogen formation, while glucagon increases it by converting glycogen back to glucose. These hormones work in a negative feedback loop to maintain homeostasis.

What is the primary function of insulin in blood glucose regulation?

• To release glucagon

• To increase blood glucose levels

• To decrease blood glucose levels

• To convert glycogen into glucose

Which hormone is released by the pancreas when blood glucose levels are too low?

• Glucagon

• Cortisol

• Insulin

• Adrenaline

What is the role of glucagon in the body?

• To increase blood glucose levels

• To convert glucose into glycogen

• To release insulin

• To decrease blood glucose levels

What does negative feedback aim to achieve in the context of blood glucose regulation?

• To bring blood glucose levels back to normal

• To decrease blood glucose levels indefinitely

• To increase blood glucose levels indefinitely

• To maintain blood glucose levels at a constant high

In a negative feedback cycle, what happens when blood glucose levels rise?

• The pancreas releases glucagon

• The pancreas releases insulin

• The liver converts glycogen into glucose

• The pancreas stops releasing insulin

How do insulin and glucagon work together in the body?

• They both increase blood glucose levels

• They maintain blood glucose levels through a negative feedback cycle

• They have no interaction with each other

• They both decrease blood glucose levels

What is the result of the interaction between insulin and glucagon?

• No change in blood glucose levels

• Constantly low blood glucose levels

• Constantly high blood glucose levels

• Maintained optimal blood glucose levels