The colon and rectum


The first section is called the ascending colon. It starts with a pouch called the cecum, where undigested food is comes in from the small intestine. It continues upward on the right side of the abdomen (belly).

The second section is called the transverse colon. The third section is called the descending colon . The fourth section is called the sigmoid colon 

The colon absorbs water and salt from the remaining food matter after it goes through the small intestine (small bowel). The waste matter that's left after going through the colon goes into the rectum, the final 6 inches (15cm) of the digestive system. It's stored there until it passes through the anus.

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