It can take six hours for the small intestine to do its job. The nutrients are sucked from the inner surface of the small ...

Did you know if you unfolded your intestines, they'd be taller than a giraffe? Yep, they form a digestive tube so lengthy it's got two sections. The so-called small intestine is about 22 feet long ...

The first of three sections of the small intestine, the duodenum, produces large quantities of mucus to protect the intestinal lining from acid in the chyme. Measuring about 20 feet (6 meters ...