My project is on the regions of the large intestine and how food travels through it. First, food enters the large intestine through the cecum. It then travels through the ascending colon, transcending colon, descending colon, and sigmoid colon where water and electrolytes are absorbed from the food. The food then becomes stool as it is dried out. The stool stays in the rectum until there is enough stool to stretch the rectal walls, which will then signal that a bowel movement is needed to excrete the waste. Once the signal is sent, the stool is moved into the anal canal where it will then be eliminated from the body out of the anal sphincter.
*My cupcake model is the full five feet of a full grown adult’s large intestine.