What Is the Function of the Sigmoid Colon?
It is so-named because it is curved like the letter “S,” which in Greek is sigma (σ).
The sigmoid colon measures about 14 to 16 inches (35 to 40 centimeters) in length and it forms a loop. It is a hollow tube that measures about 16 inches (40 cm) long and is 2-2/4 inches (7 cm) in diameter.
How Does the Sigmoid Colon Work?
The function of the sigmoid colon is to store fecal waste until it is ready to leave the body through the rectum and anus. Feces is stored in the sigmoid colon for seven hours or more and it is usually expelled from the body when new waste material enters the area.