The two differ mainly in the area of the intestine they affect: the first can appear throughout the gastrointestinal tract, although it mainly affects the ileum and cecum, and the second appears mainly in the colon and rectum [44]. Although the etiology of IBD is unknown, a high level of...
The stool from the colon is stored in the rectum. The anal sphincter provides control over releasing stool or holding it. Once stool arrives in the rectum, feedback to the brain makes the person aware of the need for a bowel movement. Voluntary control over the anal sphincter lets us hold...