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Which is the longest part of the human digestive tract?
Human bodyDigestive system
Quick Answer
The small intestine is the longest part of the human digestive tract, typically about 6 meters long in adults. It is the main site of digestion and nutrient absorption.
The Full Story
The small intestine is the longest section of the digestive tract, usually around 6 meters long in adults. Despite its name, it is longer than the large intestine; it is called “small” because of its narrower diameter. It includes the duodenum, jejunum, and ileum. Most digestion and nutrient absorption happen here, aided by enzymes, bile, and a vast absorptive surface. Its length and folded lining make it highly efficient at extracting nutrients from food.
Key Facts
1.Small intestine length: about 6 m
2.It is the main site of nutrient absorption
3.It has three sections: duodenum, jejunum, ileum
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"The longest tube in your body is where most digestion actually happens"