The colon is a five-foot-long muscular tube that is a part of the large intestine within the gastrointestinal system, responsible for absorbing water and salt from food matter. The colon also serves as a storage place for waste matter. The colon has four sections:
The first section is called the ascending colon. It starts with a small pouch (the cecum) where the small bowel attaches to the colon and extends upward on the right side of the abdomen. The cecum is also where the appendix attaches to the colon.The second section is called the transverse colon since it goes across the body from the right to the left side in the upper abdomen.The third section, the descending colon, continues downward on the left side. The fourth and last section is known as the sigmoid colon because of its “S” or “sigmoid” shape.