The ileocecal sphincter, also called the ileocecal valve, is an involuntary valve located where the small intestine and large intestine meet. It is involuntary in that it operates without ...

Diverticulosis is the most common cause. Anatomically, GI bleeding can be assumed to be of small bowel origin if the bleeding occurs distal to the ampulla of Vater and proximal to the ileocecal valve.