The
pelvic floor or
pelvic diaphragm is composed of muscle fibers of the
levator ani, the
coccygeus muscle, and associated
connective tissue which span the area underneath the
pelvis. The pelvic diaphragm is a muscular partition formed by the levatores ani and coccygei, with which may be included the parietal pelvic fascia on their upper and lower aspects. The pelvic floor separates the
pelvic cavity above from the perineal region (including
perineum) below.