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musculus quadratus labii superioris


Definition: composed of three heads usually described as three separate muscles: they are the caput angulare or levator labii superioris alaeque nasi muscle; caput infraorbitale or levator labii superioris muscle; and caput zygomaticum or zygomaticus minor muscle.

Synonym(s): quadrate muscle of upper lip

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.