What are the four regions of colon?

The colon, or large intestine, is divided into four main regions: the ascending colon, transverse colon, descending colon, and sigmoid colon. The ascending colon runs upward on the right side of the abdomen, the transverse colon crosses horizontally from right to left, the descending colon moves downward on the left side, and the sigmoid colon is the S-shaped segment leading to the rectum. Each region plays a crucial role in the absorption of water and electrolytes, as well as the formation of waste.