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The flow diagram shows how the concentration of glucose in the blood is controlled during exercise - Scottish Highers Human Biology - Question 13 - 2017
Question 13
The flow diagram shows how the concentration of glucose in the blood is controlled during exercise. Blood glucose concentration decreases Increased secretion of ho... show full transcript
Worked Solution & Example Answer:The flow diagram shows how the concentration of glucose in the blood is controlled during exercise - Scottish Highers Human Biology - Question 13 - 2017
Step 1
Which row in the table identifies hormone X and organ Y?
Answer
To identify hormone X and organ Y, we analyze the flow diagram. The blood glucose concentration decreases during exercise, prompting the secretion of a hormone that raises glucose levels by converting glycogen into glucose.
In this scenario:
- Hormone X must be glucagon, as it is responsible for increasing blood glucose levels by stimulating glycogenolysis in the liver or pancreas.
- Organ Y, therefore, must be the pancreas, which secretes glucagon when blood glucose levels are low.
Thus, the correct row is:
D - glucagon (Hormone X) and pancreas (Organ Y).