sigmoid colon

The sigmoid colon is the S-shaped part of the large intestine located at the lower end, just before the rectum. It connects the descending colon to the rectum and plays a key role in storing and moving stool toward elimination. Its shape helps it fit into the pelvis comfortably. The sigmoid colon absorbs water and electrolytes from waste material, forming solid stool. It’s also a common site for conditions like diverticulitis or tumors. Overall, it functions as a vital segment in the process of digestion and waste elimination.