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.
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.
It has its insertion on the superior tarsal plate and the skin of the upper eyelid.
This muscle, just like most others located 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 (drawback) 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 1 – Levator palpebrae superioris
Picture 2 – Levator palpebrae superioris Image