Rectal Lumen simulator

■ The simulator is divided into two parts: the rectum and anal canal, as well as the external anal sphincter. Display the morphological structure and internal view of the rectum and anal canal, including the anal column, anal valve, anal sinus, dentate line, anal comb, white line, levator ani muscle, and internal and external anal sphincters, as well as the upper and lower rectal veins and anal veins. Zoom in 10x.