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The small intestine is a long, highly convoluted tube in the digestive system that absorbs about 90% of the nutrients from the food we eat. It is given the name âsmall intestineâ because it is only 1 inch in diameter, making it less than half the diameter of the large intestine.
Your small intestine is the section of your digestive tract where the majority of nutrient absorption takes place. In this lesson, you will learn about the unique modifications within the wall of the small intestine that allow for maximum absorption.We previously learned that the small intestine is about 20 feet long.our small intestine is the section of your digestive tract where the majority of nutrient absorption takes place. In this lesson, you will learn about the unique modifications within the wall of the small intestine that allow for maximum absorption. We previously learned that the small intestine is about 20 feet long.