Paper 2: Blood Glucose Regulation

Question 1

What does homeostasis do?

Answer 1

Maintains conditions inside the body at a more or less constant level

Question 2

What happens when blood glucose levels fall?

Answer 2

Pancreas detects fall in blood glucose levels
Pancreas decreases secretion of insulin and increases secretion of glucagon
Glucagon causes liver cells to convert glycogen to glucose and release it into the blood

Question 3

What happens when blood glucose levels rises?

Answer 3

Pancreas detects rise in blood glucose concentration
Pancreas increases secretion of insulin and decreases secretion of glucagon
Insulin causes muscle and liver cells to remove glucose from blood and store it as glycogen