| labium inferius oris | The muscular fold bounding the opening of the mouth inferiorly. Synonym: labium inferius oris. (05 Mar 2000) |
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| labium superius oris | The muscular fold forming the superior border of the mouth. Synonym: labium superius oris. (05 Mar 2000) |
| levator anguli oris | <anatomy, muscle> Origin, canine fossa of maxilla; insertion, orbicularis oris and skin at angle of mouth; action, raises angle of mouth; nerve supply, facial. Synonym: musculus levator anguli oris, musculus caninus, musculus triangularis labii superioris. (05 Mar 2000) |