Food passes through the gullet, or esophagus, into the stomach.
The stomach is divided into two parts, the opening and the body,
or fundus. Digestion takes place in the small intestine which
consists of three portions: duodenum, jejunum, and ileum.
The duodenum, the shortest part, is an area where adenomas may cluster,
especially around the narrow entrance of the bile duct and the pancreas
referred to as the ampulla.
The large intestine, divided into the colon
and rectum, is approximately 1.5 metres long. Its function
is to convert water and minerals, or liquid waste, into a more solid
form. It is a warehouse for stool before evacuation takes place
through the external opening, or anus. This organ is not
required for digestion which occurs in the stomach and small intestine.
The large intestine may also be referred to as the large bowel.
Large intestine and portion
of small intestine.