The rectum begins at the rectosigmoid junction, which is demarcated by the confluence of the teniae coli. The anatomical structures that are anterior to the rectum differ in females (Figure 1A ...

The teniae coli -- the mesocolic, free, and omental teniae coli -- are three separate longitudinal ribbons (taeniae meaning "ribbon" in Latin) of smooth muscle on the outside of the ascending, ...