Blood Glucose Regulation Concepts

The video explains how blood glucose concentration is regulated by the hormones insulin and glucagon. Insulin lowers high blood glucose by promoting glucose uptake and storage as glycogen in liver and muscle cells. Conversely, glucagon raises low blood glucose by breaking down glycogen into glucose. Together, these hormones maintain glucose levels through a negative feedback loop, ensuring a balance that prevents tissue damage and supports cellular respiration.

What is blood glucose concentration?

• The amount of sugar in the bloodstream

• The amount of oxygen in the blood

• The amount of glucagon in the blood

• The amount of insulin in the blood

Why is it important to maintain a balanced blood glucose concentration?

• To increase blood pressure

• To prevent tissue damage

• To reduce cholesterol levels

• To improve digestion

What happens to carbohydrates in the intestines after a meal?

• They are stored as fat

• They are converted into proteins

• They are excreted from the body

• They are broken down into glucose molecules

Which organ detects the rise in blood glucose levels and releases insulin?

• Stomach

• Liver

• Kidneys

• Pancreas

What is the role of insulin in blood glucose regulation?

• To convert glucose into fat

• To decrease blood glucose levels

• To increase blood glucose levels

• To break down proteins

What is glycogen?

• A hormone that increases blood glucose

• A long-term storage form of glucose

• A digestive enzyme

• A type of protein

What hormone is released when blood glucose levels are too low?

• Cortisol

• Glucagon

• Adrenaline

• Insulin

How does glucagon affect blood glucose levels?

• It decreases blood glucose levels

• It converts glucose into glycogen

• It increases blood glucose levels

• It has no effect on blood glucose levels

What is the relationship between insulin and glucagon?

• Insulin decreases and glucagon increases blood glucose levels

• They both increase blood glucose levels

• They both decrease blood glucose levels

• Insulin increases and glucagon decreases blood glucose levels

Why does blood glucose concentration constantly fluctuate?

• Because of the body's temperature changes

• Because of varying oxygen levels

• Because of changes in blood pressure

• Because of the continuous release of insulin and glucagon