The large intestine or large bowel comprises in order the cecum, ascending colon, transverse colon, descending colon, and sigmoid colon. The cecum receives the contents of the ileum at the ileocecal junction, and the vermiform appendix is attached to the cecum posteroinferiorly. The ascending colon bends to the left at the hepatic or right colic flexure to become the transverse colon. The transverse colon bends down at the left colic or splenic flexure to become the descending colon. The descending colon becomes the S-shaped sigmoid colon to pass over the pelvic brim into the pelvis. The sigmoid colon straightens out as the rectum (which means straight), and rectum ends as the anal canal.