Question

Vitamin-$B_{12}$ is absorbed primarily in the

• A. Stomach
• B. Duodenum
• C. Jejunum
• D. Ileum

Answer 1

The correct option is D Ileum

• Calcium, iron, and folate are also primarily absorbed in the duodenum.
• Vitamin B${}_{12}$ is called cobalamin. It is absorbed primarily in the end part of the small intestine, the ileum.
• The main function of the ileum is to absorb vitamin B${}_{12}$ and bile salts and the products of digestion which were not absorbed by the jejunum.
• Hence, Vitamin B${}_{12}$ in association with intrinsic factor is absorbed in the terminal ileum.

So, the correct option is D.