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Pars iliococcygeus - female

Other Terms: Musculus iliococcygeus, Muscle ilio-coccygien

Muscle parts

None

Latin name

Musculus levator ani - Musculus iliococcygeus

Latin muscle parts

None

Group

Pelvis/perineal wall – lateral musculature – internal layer

Etymology

The English name of the levator ani is the muscle that lifts the ring. This muscle has two parts. The English equivalent of the pubococcygeus part of the muscle is the part between the adulthood bone and the cuckoo bone. Levator comes from the Latin verb levare meaning “to lift.” The word ani is the genitive form of anus, which comes from the Latin for “ring.” This describes the ring-like structure of the anus. Iliococcygeus comes from the word iliacus, which is the medieval Latin term for the hip bone to which it attaches. ancient Romans called it the “flank bone,” as the term ilia referred to the “soft tissues of the flank.” The word coccygeus comes from the Greek kokkyx meaning “cuckoo,” because of the resemblance of the coccyx or tailbone to the beak of a cuckoo bird.

Origin

Internal surface of obturator fascia between obturator canal and ischial spine.

Insertion

Forms a tendinous raphe with its opposite muscle posterior to the rectum and also attaches onto the sides of the coccyx.

Action

Compress the urethra, vagina, and anus; elevate the recto-anal junction; support pelvic viscera; increase intra-abdominal pressure; active in normal quiet inspiration

Nerve supply

Pudendal nerve (S2 and S3) or from small direct branches of sacral ventral rami (S2 and S3)

Blood supply

Internal pudendal artery and inferior gluteal artery from the internal iliac artery.

Latin

Musculus iliococcygeus

French

Muscle ilio-coccygien

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