Which of the following increases the surface area for absorption in the small intestine?

Question

Quizplus · Accepted Answer

All of the structures mentioned increase the surface area for absorption in the small intestine. The plicae circularis are circular folds in the mucosa and submucosa layers of the small intestine. Villi are finger-like projections of the mucosa layer that increase the surface area even further. Microvilli are tiny projections on the surface of the epithelial cells that make up the villi. Together, these structures greatly increase the surface area available for nutrient absorption in the small intestine.

Which of the Following Increases the Surface Area for Absorption