Diabetes mellitus is a group of endocrine diseases in which blood glucose remains too high over time. Understanding how insulin normally works helps explain why diabetes develops, why its symptoms occur, and why some complications require urgent attention.
Glucose is an important source of energy. It enters the body from food, is released from stored glycogen, and can also be produced from other substances. The hormone insulin, made by beta cells in the pancreas, helps many body cells take up glucose. It also promotes glucose storage and helps regulate how much glucose the liver releases.
All flashcards
What is diabetes mellitus?
A group of diseases characterized by sustained high blood glucose due to problems with insulin production, insulin action, or both.
What does insulin normally do?
Insulin helps many cells take up glucose, supports glucose storage, and helps regulate glucose release by the liver.
What are the three Ps of diabetes?
Polydipsia (excessive thirst), polyuria (excessive urination), and polyphagia (excessive hunger).
What is diabetic ketoacidosis?
A medical emergency involving excessive ketone production, most common in type 1 diabetes and associated with severe insulin deficiency.
What characterizes hyperosmolar hyperglycemic state?
A high-glucose emergency involving severe hyperglycemia and dehydration that can cause altered mental status or coma.
Quiz questions
Which process most commonly causes type 1 diabetes?Answer: Immune-mediated loss of insulin-producing pancreatic beta cells
How are diabetic retinopathy, nephropathy, and neuropathy classified?Answer: Microvascular complications affecting small vessels
Which treatment is essential for people with type 1 diabetes?Answer: Insulin replacement
Which feature is most characteristic of hyperosmolar hyperglycemic state?Answer: Severe hyperglycemia with dehydration and possible altered mental status
Based on the Wikipedia article Diabetes, licensed CC BY-SA 4.0. Adapted into a summary, flashcards and quizzes.