Homeostasis - Control of Blood Glucose

Question 1

What is meant by the term ‘homeostasis’?

Answer 1

Maintaining a constant internal environment in response to internal and external change

Question 2

Name the hormones involved in controlling blood glucose regulation.

Answer 2

• Insulin
• Glucagon

Question 3

Explain how blood glucose concentration is returned to normal when it has become too high.

Answer 3

• Insulin is secreted by the pancreas into the bloodstream
• The insulin causes glucose to move into liver and muscle cells, so the concentration of glucose in blood returns to normal

Question 4

Explain how blood glucose concentration is returned to normal when it has become too low.

Answer 4

• Glucagon is secreted by the pancreas into the bloodstream
• Glucagon makes the liver convert glycogen into glucose, so glucose is released into blood by liver