GS PrelimsScience and TechnologyGeneral Science2007

Which one of the following is the correct sequence in the order of decreasing length of the three structural parts given below of small intestine in the human body?

Jejunum – Duodenum- Ileum

Ileum- Duodenum- Jejunum

Jejunum- Ileum- Duodenum

Ileum- Jejunum- Duodenum

Correct Answer: Option D

Explanation

1. The small intestine in the human body consists of three structural parts: the duodenum, the jejunum, and the ileum. 2. In terms of decreasing length, the order is: Ileum (longest, about 3-4 meters) > Jejunum (about 2.5 meters) > Duodenum (shortest, about 25-30 cm). 3. Therefore, the correct sequence is Ileum - Jejunum - Duodenum.

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