Blood sugar regulation is the process by which the levels of glucose in the blood are maintained by the body within a narrow range. Insulin and glucagon are hormones that helps to regulate the levels of blood glucose, or sugar. Insulin is produced by the beta cells in the islets of langerhans in the pancreas and glucagon is secreted into the bloodstream by the alpha cells, found in the islets of langerhans, in the pancreas. These hormones work in what’s called a negative feedback loop. The pancreas releases glucagon when the concentration of glucose in the bloodstream falls too low. The rise in blood glucose causes insulin to be released from the pancreas.