Levator labii superioris (muscle)

[TA] facial muscle of upper lip; origin, maxilla below infraorbital foramen; insertion, interspersed with orbicularis oris to reach skin of upper lip; action, elevates upper lip; nerve supply, facial. SYN: musculus levator labii superioris [TA], caput infraorbitale quadrati labii superioris, elevator muscle of upper lip.

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