The large intestine of man is about 1.5 meters long. It begins from the area, called iliac fossa bearing the caecum on the right side and terminates in the rectum and anal canal. It consists of five parts. They are Caecum and appendix, colon, rectum and anal canal. It is the first part of large intestine. It measures about 6cm in length and 7.5cm in breadth. It lies in the right iliac fossa. Ileum of small intestine opens into the caecum through an opening called as ileocaecal orifice. The opening is guarded by a sphincter called as ileocaecal valve. medical billing training online trains you all these.