Sometimes there are problems with feedback loops, and they do not function properly to regulate homeostasis.

The level glucose in the blood is regulated by a feedback loop. Blood glucose can be taken in by cells for respiration to make ATP, and it can be stored in glycogen in the liver.

There are two hormones involved in the regulation of blood glucose level: insulin and glucagon. These hormones are produced in the pancreas.

Source: Adapted from regulation of blood glucose, Antranic.org

What type of feedback loop is used to regulate the level of blood glucose? Click on the correct answer.

Interactive popup. Assistance may be required. Negative Feedback Loop Correct! This is an example of a negative feedback loop. When the blood glucose level is too high or too low the body responds to the stimulus and works to bring the glucose level back to normal.

Interactive popup. Assistance may be required. Positive Feedback Loop Incorrect. This is not a positive feedback loop. Remember that in a positive feedback loop the body produces a response that increases the stimulus.

Diabetes occurs when there is an alteration or problem with the feedback loop that regulates blood glucose levels. There are two different types of diabetes. Click on each type of diabetes in the image below to learn more.

The image below shows the symptoms of diabetes.

Source: The Truth About Diabetes, BBC