Levator labii superioris
|Levator labii superioris|
|Muscles of the head, face, and neck.|
|Latin||musculus levator labii superioris|
|Gray's||subject #108 383|
|Origin||Medial infra-orbital margin|
|Insertion||Skin and muscle of the upper lip (labii superioris)|
|Nerve:||buccal branch of the facial nerve (C.N. VII)|
|Action:||Elevates the upper lip|
Its medial fibers form the angular head, which arises by a pointed extremity from the upper part of the frontal process of the maxilla and passing obliquely downward and lateralward divides into two slips.
One of these is inserted into the greater alar cartilage and skin of the nose; the other is prolonged into the lateral part of the upper lip, blending with the infraorbital head and with the Orbicularis oris.
The intermediate portion or infraorbital head arises from the lower margin of the orbit immediately above the infraorbital foramen, some of its fibers being attached to the maxilla, others to the zygomatic bone.
Its fibers converge, to be inserted into the muscular substance of the upper lip between the angular head and the Caninus.
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.