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Understanding the Physiology of Health and Illness

Type 1 and type 2 diabetes

  • 3 things to know
  • AS 7

Overview

Diabetes mellitus and two long-term complications of poorly controlled diabetes.

What you need to know

Answer each one before you reveal it.

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Key term

What is diabetes mellitus?

Key term

What is the physiological cause of type 1 diabetes?

Key term

Why is type 1 diabetes described as autoimmune?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is diabetes mellitus?

    Model answer

    Diabetes mellitus is a condition in which the body cannot control the level of glucose in the blood.

  2. 2

    What is the physiological cause of type 1 diabetes?

    Model answer

    In type 1 diabetes the immune system destroys the insulin-producing beta cells of the pancreas, so almost no insulin is made.

  3. 3

    Why is type 1 diabetes described as autoimmune?

    Model answer

    Type 1 diabetes is autoimmune because the person's own immune system attacks and destroys the beta cells in their pancreas.

  4. 4

    At what stage of life does type 1 diabetes usually appear?

    Model answer

    Type 1 diabetes usually appears in childhood or early adult life, although onset at any age is possible.

  5. 5

    What is the physiological cause of type 2 diabetes?

    Model answer

    In type 2 diabetes the body's cells become resistant to insulin, and the pancreas cannot make enough insulin to overcome that resistance.

  6. 6

    Which type of diabetes accounts for most cases?

    Model answer

    Type 2 diabetes accounts for the great majority of cases of diabetes.

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