Positive and Negative Feedback Loops

Negative Feedback loop: dance around that point, brings you…

Back to it, helping maintain stability

Positive Feedback loop: amplifying and moving

Away from the set point

What can alterations in our feedback loops lead to?

Inbalances or diseases, such as diabetes

Negative feedback

A. Ectotherms defined:

B. Endotherms defined:

A. Organism that relies a stable internal body temperature through internal metabolic processes

Mistakes in Feedback Loops

a. Besides being in your blood, where else could glucose go? (2x)

b. What two hormones help with blood glucose regulation:

c. What organ and what other job does it have?

d. What are the two cells found in the pancreas and what does each do?

A. Taken into cells and used for respiration to get ATP or store it in glycogen (mostly found in the liver)

B. Insulin and glycogen

C. Pancreas - to empty digestive enzymes into the small intestine when food is present

D.

• Beta cells: Produce insulin to lower blood glucose levels

• Alpha cells: Produce glucagon to raise blood glucose levels

A. What is wrong when you have type I diabetes?

B. What is type II diabetes a result of usually?

C. What pattern do you see with diabetes worldwide and why is that?

A. Beta cells don’t work

B. When your body becomes resistant to insulin

C. Diabetes more common in areas with high-fat diets