The ileocecal valve does not limit the progress of the lesions of ulcerative colitis into the terminal part of the ileum any more than it prevents secondary involvement of the colon from the ileum ...
The colon is one part of the large intestine, which also contains the appendix, the cecum ... the small intestine. The ileocecal sphincter, also called the ileocecal valve, is an involuntary ...