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musculus ischiococcygeus --> coccygeus

(Science: anatomy, muscle) origin, spine of ischium and sacrospinous ligament; insertion, sides of lower part of sacrum and upper part of coccyx; action, assists in support of pelvic floor, especially when intra-abdominal pressures increase; nerve supply, third and fourth sacral.

Synonym: musculus coccygeus, coccygeal muscle, musculus ischiococcygeus.