By definition, pi is the ratio of the circumference of a circle to its diameter. Pi is always the same number, no matter which circle you use to compute it. Unlike some responses on this forum, PI does not equal 22/7 there is a slight difference.
The rectum is a component of the lower gastrointestinal tract. The rectum is a continuation of the sigmoid colon, and connects to the anus. The rectum follows the shape of the sacrum, and ends in an expanded section called the rectal ampulla.Unlike other portions of the colon, the rectum does not have taeniae coli.The rectum connects with the sigmoid colon at the level of S3, and connects with the anal canal as it passes through the pelvic floor muscles.Supports of the rectum include: 1  Pelvic floor formed by levator ani muscles.nlike other portions of the colon, the rectum does not have taeniae coli. The rectum connects with the sigmoid colon at the level of S3, and connects with the anal canal as it passes through the pelvic floor muscles. Supports of the rectum include: 1  Pelvic floor formed by levator ani muscles.
As the rectum fills with stool, the anal sphincter muscle (a circular muscle surrounding the anal canal) prevents feces from coming out of the rectum until it is time to have a deliberate (controlled) bowel movement. Various conditions can cause incontinence.