How many sections is the small intestine divided into?

• A. Two
• B. Four
• C. Three
• D. Five

Answer: (C)

The small intestine is organized into three regional sections: the duodenum, the jejunum, and the ileum. This three-part division is the standard anatomical convention, reflecting distinct roles—digestion begins in the duodenum, most nutrient absorption occurs in the jejunum, and absorption of bile acids and vitamin B12 happens in the ileum. If you see two, four, or five sections listed, that would not align with the usual naming of these three regions.