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.
Overview. Glucagon is a hormone that is produced by the pancreas. It is often thought of as having the opposite effect of insulin. While insulin works to reduce high levels of glucose in the bloodstream, glucagon helps to ensure that glucose levels do not drop too low.