Three features of the mucosa and submucosa that are different and unique to the small intestine include circular folds, villi, and microvilli.
The wall of the small intestine is made up of of the same four layers normally found in the alimentary canal.
Nevertheless, three features of the mucosa and submucosa are different and unique to the small intestine. These features include circular folds, villi, as well as microvilli.
They expand the absorptive surface area of the small intestine greater than six hundred fold. They are superabundant in the proximal two-thirds of the small intestine, which is the site of major absorption.
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