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Questions and Answers
What is the primary energy source for brain cells?
What is the normal range of glucose concentration in 100mL of blood?
What is the term for blood glucose concentrations above 110mg/dl?
What is the term for blood glucose concentrations below 70mg/dl?
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What is the consequence of a lack of glucose in the brain?
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What is the primary function of insulin?
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What happens to glycogen in the liver when insulin is released?
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When is glucagon released?
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What is the effect of glucagon on the liver?
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What is the opposite effect of insulin on blood glucose levels?
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Study Notes
Glucose and Blood Sugar Levels
- Glucose is the primary energy source for brain cells.
- A lack of glucose can cause fainting.
- The normal level of glucose in 100mL of blood is 90mg, but can vary between 70-150mg.
- Hyperglycemia occurs when glucose concentrations exceed 110 mg/dl.
- Hypoglycemia occurs when glucose concentrations fall below 70 mg/dl.
Blood Glucose Regulation
- Insulin is released when blood glucose levels rise above 110 mg/dl
- Insulin forces liver and muscles to take up glucose from the bloodstream
- Insulin stimulates the liver to produce glycogen by linking glucose molecules together
Glucagon Function
- Glucagon is released when blood glucose levels fall below 70 mg/dl
- Glucagon raises blood glucose levels
- Glucagon forces the liver to break down glycogen into glucose and release it into the bloodstream
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Description
Learn about the role of glucose in the body, its normal levels in blood, and the effects of hyperglycemia and hypoglycemia. Test your knowledge of glucose and its importance in the human body.
