Читать книгу Ambulatory Urology and Urogynaecology - Группа авторов - Страница 33

The puborectalis muscle, part of the levator ani muscle, wraps like a sling around the lower rectum, acts to control the anorectal angle and consequently facilitates evacuation of bowel content. During a bowel movement, the puborectalis muscle relaxes to allow the bowel contents to pass. If the muscle does not relax and/or contracts paradoxically, it can lead to straining and functional constipation, which is challenging to treat.