Approximately what is the normal length of the small intestine in adults?

Approximately what is the normal length of the small intestine in adults?

• A. 100 cm
• B. 600 cm
• C. 150 cm
• D. 200 cm

Answer: (B)

The small intestine is extremely long to maximize nutrient absorption. In an adult, it runs from the stomach’s pyloric sphincter to the ileocecal valve and is typically about 6 meters long (roughly 600 cm). This substantial length, along with folds like villi and microvilli, creates a huge absorptive surface area. The other values are much shorter than what’s needed to provide that absorptive capacity, so they don’t fit as the normal adult length. Therefore, about six meters is the normal length.

The small intestine is extremely long to maximize nutrient absorption. In an adult, it runs from the stomach’s pyloric sphincter to the ileocecal valve and is typically about 6 meters long (roughly 600 cm). This substantial length, along with folds like villi and microvilli, creates a huge absorptive surface area. The other values are much shorter than what’s needed to provide that absorptive capacity, so they don’t fit as the normal adult length. Therefore, about six meters is the normal length.