what is inside the levator muscle
The levator ani is made up of the following three muscles: 1  Puborectalis muscle: originates lateral from the symphysis on both sides and encircles the rectum (anorectal junction) which causes a ventral bend between rectum and anal canal. Partly it is interwoven with the external anal sphincter.
Origins, insertions, innervation and functions of the levator ani muscle. While in quiescent state, the urethra and the rectum are mechanically closed at the levator hiatus. The muscle relaxes at the beginning of urination and defecation. By this means the levator ani muscle plays a crucial role in the preservation of urinary and bowel continence. Clinical Aspects The levator hiatus is a potential weak spot of the pelvic floor musculature, especially in women.