Science / Biology / Insulin: A hormone secreted by the pancreas that stimulates the uptake of glucose by body cells. Insulin works antagonistically with glucagon to control blood sugar levels.


Science / Biology / Hormones: Chemical substances that are produced in the endocrine glands and travel in the blood to target organs where they elicit a response. MORE


Science / Biology / Pancreas: A gland in the abdominal cavity that secretes digestive enzymes into the small intestine and also secretes the hormones insulin and glucagon into the blood, where they regulate blood glucose levels. A MORE


Science / Biology / Glucagon: A hormone released by the pancreas that stimulates the breakdown of glycogen and the release of glucose, thereby increasing blood levels of glucose. Glucagon and insulin work together to maintain bloo MORE

Pancreatic Islets

Science / Biology / Pancreatic Islets: Clusters of endocrine cells in the pancreas that secrete insulin and glucagon; also known as islets of Langerhans. MORE

Diabetes Mellitus

Science / Biology / Diabetes Mellitus: A disorder associated with defects in insulin action. Type I diabetes is characterized by inadequate insulin secretion; Type II diabetes is characterized by impaired insulin secretion in response to e MORE