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Question

lleum is characterized by


A

Brunner's glands and leaf-like villi

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B

Brunner's glands and club-shaped villi

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C

Peyer's patches and Brunner's glands

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D

Club-shaped villi and Peyer's patches

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Solution

The correct option is D

Club-shaped villi and Peyer's patches


The correct option is D:

Explanation of the correct option:

  1. The small intestine has three parts, duodenum, jejunum, and ileum.
  2. The ileum is the longest and the lowest part of the small intestine.
  3. This part executes the function of absorption of vitamin B12, a deficiency of which can lead to megaloblastic anemia.
  4. The ileum mostly absorbs fatty acids and glycerol.
  5. The wall of the small intestine consists of Peyer's patches, which produce lymphocytes, small finger-like projections, the villi, and microvilli throughout the mucosa and increase the surface area of the intestine.
  6. Each villus is covered by blood capillaries and a lymph vessel or lacteal that helps in the absorption of fat from the lumen of the intestine.

Explanation of the incorrect option:

Option A:

  1. Brunner’s glands are duodenal glands localized predominantly in the submucosa of the duodenum.
  2. They secrete an alkaline fluid that protects duodenal epithelium by counteracting the acid chime from the stomach

Final answer: Ileum is characterized by Club-shaped villi and Peyer's patches.


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