Blood Disorders · Histology

Which blood disorder is caused by a deficiency of Intrinsic Factor, leading to impaired Vitamin B12 absorption?

  1. Aplastic anemia
  2. Pernicious anemia
  3. Thalassemia
  4. Polycythemia vera
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Correct answer: Pernicious anemia

Pernicious anemia is an autoimmune condition where the body attacks parietal cells in the stomach. The resulting lack of intrinsic factor prevents B12 absorption, which is essential for proper DNA synthesis in erythroblasts.

Difficulty: Medium Question 3 of 20

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