coccygeal muscle


n.

A muscle with origin in the spine of the ischium and sacrospinous ligament, with insertion to the sides of the lower part of the sacrum and the upper part of the coccyx, with nerve supply from the third and fourth sacral nerves, and whose action assists in raising and supporting the pelvic floor.

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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.