Final answer:
Insulin is released by the pancreas in response to elevated blood glucose levels after a meal, and it helps bring the glucose level back to normal.
Step-by-step explanation:
Following a meal, when blood glucose levels become elevated, the beta cells of the pancreas release insulin into the blood. Insulin helps to bring the level of glucose back to normal by stimulating body cells to take up insulin from the blood. It also helps convert excess glucose to glycogen in the liver, reducing blood glucose levels.