Multiple choice

Which of the following parts of the small intestine is the longest?

  1. Duodenum

  2. Jejunum

  3. Ileum

  4. Colon

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The small intestine consists of three sections: duodenum (shortest, ~25 cm), jejunum (~2.5 meters), and ileum (longest, ~3-4 meters). The ileum makes up approximately 60% of the small intestine's total length and connects to the large intestine at the ileocecal valve. The colon is part of the large intestine, not the small intestine.

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