What purpose is served by the numerous folds and millions of microscopic projections in the jejunum?
A) They increase peristalsis to allow for better movement through the intestine.
B) They increase the surface area to allow for greater absorption.
C) They secrete bile to facilitate digestion.
D) They release substances to neutralize stomach acid.

Question

Quizplus · Accepted Answer

The numerous folds (also known as plicae circulares) and millions of microscopic projections (known as villi) in the jejunum increase the surface area of the intestinal lining. This greatly increases the ability of the intestine to absorb nutrients from the digested food passing through.

What Purpose Is Served by the Numerous Folds and Millions