Levator palpebrae superioris

Levator palpebrae superioris
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Levator palpebrae superioris Definition

It is the muscle located in the orbit, the bony skull cavity containing the eyeball, which elevates the upper eyelid – also known as the superior eyelid.

Levator palpebrae superioris Appearance

It is thin and flat in shape. It is triangular in appearance.

Levator palpebrae superioris Location

It is situated on the medial eye-lid on either side of the face.

Levator palpebrae superioris Anatomy

Know about the origin, insertion and innervations of this structure.

Origin

The muscle originates on the lesser sphenoid bone wing, at a position slightly higher than the optic foramen. It broadens to turn into the Levator aponeurosis.

Insertion

It has its insertion on the superior tarsal plate and the skin of the upper eyelid.

Innervations

This muscle, just like most others locate in the orbit, is innervated by the superior division of Cranial Nerve III (oculomotor nerve). Due to this reason, the eyelid moves up as soon as you look upward.

Levator palpebrae superioris Function

This muscle helps elevate as well as retract (draw back) the upper eyelid. In other words, it helps in moving the eyelid.

Levator palpebrae superioris Disorders

Damage to the structure or nerves of this muscle can lead to Ptosis or drooping of the eyelid.

Levator palpebrae superioris Pictures

Get an idea about the physical appearance of this muscle with the aid of these useful images.

Picture of Levator palpebrae superioris

Picture 1 –  Levator palpebrae superioris

Image of Levator palpebrae superioris

Picture 2 – Levator palpebrae superioris Image

References:

http://en.wikipedia.org/wiki/Levator_palpebrae_superioris_muscle

http://www.lumen.luc.edu/lumen/meded/grossanatomy/dissector/mml/lps.htm

http://www.gpnotebook.co.uk/simplepage.cfm?ID=-1979318192

http://www.ivy-rose.co.uk/Define/Levator_palpebrae_superioris

Last modified on September 29th, 2017 at 9:41 am

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