You are correct that insulin and glucagon are two hormones that play important roles in regulating blood sugar levels in the body.
Insulin is produced by the pancreas and its main function is to lower blood sugar levels. When blood glucose levels are high, such as after eating a meal, the pancreas releases insulin into the bloodstream. Insulin helps to increase the uptake of glucose by cells, particularly muscle and fat cells, and also helps to inhibit the production of glucose in the liver. As a result, insulin helps to reduce the level of glucose in the bloodstream and restore blood sugar levels to a normal range.
Glucagon is also produced by the pancreas and its main function is to raise blood sugar levels. When blood glucose levels are low, such as during periods of fasting or when the body is using a lot of energy, the pancreas releases glucagon into the bloodstream. Glucagon stimulates the liver to convert stored glycogen into glucose, which is then released into the bloodstream. As a result, glucagon helps to increase the level of glucose in the bloodstream and restore blood sugar levels to a normal range.
Together, insulin and glucagon work to maintain blood sugar levels within a healthy range, helping to ensure that the body has a consistent source of energy. Dysregulation of these hormones can lead to conditions such as diabetes, in which blood sugar levels become too high or too low.