external anal sphincter muscle


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Related to external anal sphincter muscle: External urethral sphincter, Sphincter ani externus muscle

ex·ter·nal a·nal sphinc·ter mus·cle

(eks-tĕr'năl ā'năl sfingk'tĕr mŭs'ĕl)
Fusiform ring of striated muscular fibers surrounding anus, attached posteriorly to the coccyx and anteriorly to the central tendon of the perineum.
Synonym(s): external sphincter muscle of anus, musculus sphincter ani externus.
References in periodicals archive ?
Dogs have two anal glands or sacs, one on each side of the anus, between the internal and external anal sphincter muscles.

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