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If you eat a quesadilla from the dining hall, the following processes will occur:
Glucose from the carbohydrates is absorbed in the intestine and the level of glucose in blood rises. Blood glucose levels rise and stimulates beta cells in the pancreas to release insulin; while simultaneously inhibiting alpha cells release of glucagon. Insulin has a major effect of facilitating the movement of glucose into many cells, such as the liver; as a result, blood glucose levels fall. When blood glucose levels drop, the stimulus for insulin release disappears and insulin is no longer secreted.
1. What type of feedback is occurring?
2. What is the stimulus?
3. What are the receptors?
4. What is the output?

Sagot :

This is an instance of negative feedback. Glucose is the main trigger for the release of insulin. In cells, insulin attaches to the insulin receptor (IR).

Insulin is a major player in controlling blood sugar levels. Insulin tells the liver, muscles, and other cells to store the extra glucose when blood sugar levels rise. Some of it is kept as body fat and some are kept as muscle and liver glycogen. The hormone glucagon is released by the pancreas if blood glucose levels are too low. The blood carries this to the liver, where it stimulates the conversion of glycogen to glucose. Blood glucose levels return to normal as soon as the glucose enters the bloodstream.

Consequently, we can conclude that this is an example of negative feedback. The main factor that causes insulin to be released is glucose. Insulin binds to the insulin receptor in cells.

LEARN MORE ABOUT INSULIN HERE:

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