The rectum is the last straight section of the large intestine before reaching the anus.
The Structure and Function of the Digestive System
Pressure in the rectum can be a sign of a serious health issue such as…. The large intestine is a highly specialized organ that is responsible for processing waste so that emptying the bowels is easy and convenient. Bile from the liver secreted into the small intestine also plays an important role in digesting fat. Its function is to control the expulsion of fecesunwanted semi-solid matter produced during digestion, which, depending on the type of animal, may include: Made up of three segments - the duodenum, jejunum, and ileum - the small intestine is a foot long muscular tube that breaks down food using enzymes released by the pancreas and bile from the liver. In other projects Wikimedia Commons. Views Read View source View history.