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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

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introductionstatpearls· Introduction· item NBK556078

The levator ani is a complex funnel-shaped structure mainly composed of striated muscle with some smooth muscle components (see Image. Female Perineum).[1] Located on either side of the lower pelvis, it supports and raises the pelvic floor and allows various pelvic structures to pass through it. The levator ani muscle and the coccygeus muscle are part of the pelvic floor. It forms from the confluence of 3 muscles: puborectalis, pubococcygeus, and iliococcygeus muscles. These mostly receive innervation by the somatic nerves from the sacral plexus, namely the pudendal nerve and nerve of the levator ani muscle, and autonomic nerves from the inferior hypogastric plexus.[2]