and assess the anatomy of the functional intestine. During a colonoscopy, a healthcare professional uses an endoscope to view the colon and the part of the small intestine that connects to the ...

These processes turn the food into a thick paste, known as chyme. The small intestine is around 20 ft (6 m) long and absorbs around 90% of the nutrients from food into the bloodstream. From the ...

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 ...

As far back as the 16th century, we were mapping out the murky territory of the human small intestine in anatomy books. We know, for example, that this digestive tract is—on average—about 6 ...