Circular folds are circumferential folds in the mucosa and submucosa of the small intestine, also known as plicae circulares or valvulae conniventes. They increase the surface area of the small intestine, allowing for more efficient absorption of nutrients.

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Circular Folds Are

Question 81

Multiple Choice

Circular folds are

A) ridges in the wall of the stomach.
B) circumferential folds in the mucosa and submucosa of the small intestine.
C) fingerlike projections on the surface of the mucosa of the small intestine.
D) ridges on the external edges of the colon.
E) abnormal structures formed by excessive pressure in the small intestine.

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