Fruits and vegetables contain soluble and insoluble fiber in varying proportions. When you eat soluble fiber, it absorbs water to form a gel-like mass, which helps you feel full and provides other health benefits. It prevents a surge in blood sugar after you eat by slowing down the absorption of carbohydrates.
If the blood glucose level falls to dangerous levels (as in very heavy exercise or lack of food for extended periods), the Alpha cells of the pancreas release glucagon, a hormone whose effects on liver cells act to increase blood glucose levels.
Glucagon is a hormone that raises blood sugar levels. If you eat a high sugar meal, the blood glucose level rises, which triggers the release of insulin. If you skip a meal, your blood glucose level will drop, which triggers the release of glucagon. To unlock this lesson you must be a Study.com Member.