Pelvic diaphragm

From IKE

The pelvic diaphragm is perhaps the most important muscle of the pelvic wall of the [[pelvis][. It supports the pelvic contents that lie above it (e.g., bladder and, in the female, the uterus), and also supports structures that pass through it (e.g., anal canal and, in the female, the vagina). The pelvic diaphragm is formed by the bilateral levator ani and coccygeus muscles, together with their fascial coverings. The coccygeal muscles complete the diaphragm posteriorly, passing from the ischial spine on each side to the lower end of the sacrum and coccyx. The muscles of the pelvic diaphragm are supplied by branches (somatic) of the sacral plexus.