Your duodenum is the first section of the small intestine into which your stomach feeds. It is a short, descending chute that curves in a "C" form around your pancreas before joining the rest of the coiled intestines.

The middle part, known as the jejunum, accounts for less than half of the remaining length. It has a dense network of blood veins that give it a deep crimson color.

The ileum is your small intestine's final and longest portion. Food spends the longest time in your ileum, absorbing the most water and nutrients.