HomeoStasis: Control of blood glucose concentration.

Question 1

What monitors the blood glucose concentration?

Answer 1

• Pancreas.
• Pancreas produces the hormone insulin and travels around the bloodstream all around the body.
• Triggers body cells to take up glucose from the blood.
• Triggers liver and muscle cells to store excess glucose as a storage molecule (Glycogen).
• Concentration of blood glucose returns constant.

Question 2

What is diabetes?

Answer 2

• When a persons glucose blood control doesn’t work effectively.
• 2 types.

Question 3

What is Type 1 diabetes?

Answer 3

Type 1 diabetes:
- Pancreas does not produce enough insuli
so the Blood Glucose concentration rises + remains at a high level.
as the Pancreas cannot produce sufficient insulin.

Question 4

How does a person with type 1 diabetes deal with the lack of insulin?

Answer 4

• Monitor their glucose blood concentration.
• Inject themselves with insulin if glucose blood concentration rises too much so it decreases.
  EXAMPLE: After a carbonated rich meal.

Question 5

What is type 2 diabetes?

Answer 5

• Body cells stop responding to insulin produced by the pancreas.
• ## Glucose blood levels could rise too high.

Question 6

How does a person with Type 2 diabetes solve this problem?

Answer 6

• diet containing a controlled level of carbonhydrates.

- Advised to take excercise as a major risk factor is obese.

Question 7

What happens if the blood glucose concentration falls to low?

Answer 7

• Pancreas releases the hormone glucagon into the blood stream.
• Triggers liver cells to convert glycereol stores back into glucose and the glucose is released into the blood.
• Causes blood concentration to return to normal.

Question 8

How does insulin and glucagon form a negative feedback cycle?

Answer 8

• Both insulin and Glucagon have oppositing effects insulin being used to decrease the blood glucose concentration and Glucagon increasing the concentration.