Levator palpebrae superioris
Levator palpebrae superioris - Definition
It is a muscle that can be found in the bony cavity of the skull that contains the eyeball, also known as orbit, and which lifts the superior or upper eyelid.
Levator palpebrae superioris - Location
It can be found on either side of the face, on the medial eye-lid.
Levator palpebrae superioris - Appearance
It is thin, flat and triangular in shape.
Levator palpebrae superioris - Anatomy
The muscle has its point of origin on the lesser sphenoid bone wing. It can be found in this structure at a little higher position as compared to the optic foramen. It gets broad to turn into the structure referred to as Levator aponeurosis. Its point of insertion is on the skin of the upper eyelid and the superior tarsal plate. Similar to other orbital muscles, this muscle is innervated by the superior division of the oculomotor nerve - also referred to as Cranial Nerve III. Due to this type of innervations, as soon as humans look upward the eyelid tends moves up.
Levator palpebrae superioris - Function
It helps lift the upper eyelid as well as draw it back. It is responsible for the movement of the eyelid.
Levator palpebrae superioris - Disorders
One may suffer from drooping of the eyelid (Ptosis) due to damage to the nerves or structure of this muscle.
Levator palpebrae superioris - Pictures
The following images would help you know how this muscle looks like.
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