The Small Intestine

 The small intestine gets is so named because it is significantly smaller in diameter than the large intestine. It consists of 3 segments, and is where the majority of nutrients are absorbed into the blood and lymph.

The duodenum is the first short segment of the small intestine. It receives the chyme from the stomach.

The jejunum is the longest part of the small intestine. It is lined by millions of tiny finger-like processes called villi, which increase the surface area of its lining and improve absorption.

The ileum is the last, short portion of the small intestine. It passes material on to the large intestine.