Term Name:	external anal sphincter
Synonyms:	external sphincter ani, musculus sphincter ani externus, sphincter ani externus
Definition:	The Sphincter ani externus (external anal sphincter) is a flat plane of muscular fibers, elliptical in shape and intimately adherent to the integument surrounding the margin of the anus. [WP,unvetted].
Ontology:	Uberon Ontology [UBERON:0001367]