levator palpebrae superioris muscle


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le·va·tor pal·pe·brae su·pe·ri·o·ris mus·cle

(le-vā'tŏr pal-pē'brē sū-pēr-ē-ō'ris mŭs'ĕl)
Origin, orbital surface of the lesser wing of the sphenoid, above and anterior to the optic canal; insertion, skin of eyelid, tarsal plate, and orbital walls, by medial and lateral expansions of the aponeurosis of insertion; action, raises the upper eyelid; nerve supply, oculomotor.
Synonym(s): musculus levator palpebrae superioris [TA] , elevator muscle of upper eyelid.
References in periodicals archive ?
Levator palpebrae superioris muscle was functioning normally.
* Ptosis--the position of the upper lid is determined by the relative action of the levator palpebrae superioris muscle (III cranial nerve), Muller's muscle (postganglionic sympathetic nervous system) and the orbicularis oculi muscle (VII cranial nerve).
It exists in complex with multiple independent subnuclei, controlling the superior, inferior, and medial rectus muscle, inferior oblique muscle, levator palpebrae superioris muscle, and sphincter pupillae, respectively.
We thought that the bilateral nerve fibers of the levator palpebrae superioris muscle were damaged in the oculomotor fascicles and that of the other external and internal muscles controlled by the oculomotor nerve were damaged supranuclearly.
After reviewing local data and the previous literature, Watkins et al .[sup][2] also concluded that the lesions were more frequently involved with the rectus muscles (73%) than the oblique or the levator palpebrae superioris muscle (11%).
Long-term correction of ptosis requires surgical manipulation of the levator palpebrae superioris muscle and/or Muller's muscle.
The third reason not to rub your eyes has to do with one of the smallest muscles in your body, the levator palpebrae superioris muscle. The levators make up a thin layer of tiny muscle cells that help the eyelids open and close.
Disinsertion of the aponeurosis of the levator palpebrae superioris muscle after cataract extraction.
(2,3) More severe forms may involve hypoplasia of the levator palpebrae superioris muscle or tendon with a minimal or absent eyelid crease.

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