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levator

   Also found in: Dictionary/thesaurus, Medical 0.01 sec.
levator [lə′vād·ər]
(medicine)
An instrument used for raising a depressed portion of the skull.
(physiology)
Any muscle that raises or elevates a part.


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In particular, they focused on movement of the levator labii muscle, which acts to raise the upper lip and wrinkle the nose, movements that are thought to be characteristic of the facial expression of disgust.
Ptosis occurs as a result of a dysfunction of one or both of the upper eyelid elevators--the levator palpebrae superioris and Muller's muscle.
A very thin muscle in the eyelids closes the lids, while the so-called levator muscle opens them.
 
 
 
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