part of part of has muscle origin has muscle origin has muscle insertion has muscle insertion Homo sapiens muscle of pelvis levator ani muscle coccyx ischial spine iliococcygeus muscle FMA:19092 iliococcygeus iliococcygei The Iliococcygeus arises from the ischial spine and from the posterior part of the tendinous arch of the obturator fascia, and is attached to the coccyx and anococcygeal raphC); it is usually thin, and may fail entirely, or be largely replaced by fibrous tissue. It is part of the levator ani group of muscles. An accessory slip at its posterior part is sometimes named the Iliosacralis. iliococcygeal SCTID:244964003 levator ani - iliococcygeus UBERON:0011511 levator ani-iliococcygeus iliococcygeus Wikipedia:Iliococcygeus_muscle musculus iliococcygeus