what triggers the pancreas to secrete insulin? what triggers the pancreas to secrete glucagon?

Answer 1

The human body wants blood glucose (blood sugar) maintained in a very narrow range. Insulin and glucagon are the hormones which make this happen. Both insulin and glucagon are secreted from the pancreas, and thus are referred to as pancreatic endocrine hormones.

Insulin and glucagon are hormones secreted by islet cells within the pancreas. They are both secreted in response to blood sugar levels, but in opposite fashion.

Insulin is normally secreted by the beta cells (a type of islet cells) of the pancreas. The stimulus for insulin secretion is a HIGH blood glucose.Although there is always a low level of insulin secreted by the pancreas, the amount secreted into the blood increases as the blood glucose rises. Similarly, as blood glucose falls, the amount of insulin secreted by the pancreatic islets goes down

Glucagon is secreted by the alpha cells of the pancreatic islets in much the same manner as insulin...except in the opposite direction. If blood glucose is high, then no glucagon is secreted. When blood glucose goes LOW, however, (such as between meals, and during exercise), more and more glucagon is secreted. Like insulin, glucagon has an effect on many cells of the body, but most notably the liver. The effect of glucagon is to make the liver release the glucose it has stored in its cells into the blood stream, with the net effect of increasing blood glucose. Glucagon also induces the liver (and some other cells such as muscle) to make glucose out of building blocks obtained from other nutrients found in the body (e.g., protein).

Answer 2

its like a balancing system. Insulin is a hormone secreted from the pancreas that regulates the levels of glucose in your blood stream. It decreases the amount keeping it between a normal 80-110. Glycogen is a form of sugar stored in the liver, which is a source of energy or sugar for the body when it is needed. If sugar levels drop too low from not eating, or if the body needs a burst of energy when all other sources are depleted, the liver breaks down the glycogen and release it. Insulin is used on a consistent basis, while glycogen is basically a reserve in the liver when its needed. So in short, insulin decreases sugar levels, while glucagon increases it. its a balancing system.

Answer 3

The blood glucose level is monitored by the islet cells in the pancreas. When the level gets too high, insulin is produced to remove the glucose from the blood and store it in body cells (primarily the liver and muscle tissue). When the glucose levels get too low, the islet cells produce glucagon, which cause the release of the stored glucose back into the blood stream. Glucose stored in the liver and muscle is converted into glycogen.

Answer 4

High blood sugar (glucose) level and parasympathetic nervous system for insulin. Low blood sugar level, sympathetic nervous system, exercise, and skipping meals for glucagon.

Answer 5

Nikki you and Maria need to READ your book, having someone else do your homework is not going to teach you much. I'm sure you teacher is going to test you on this material and you will not know the answers.