Levator labii superioris

The levator labii superioris (Latin: musculus levator labii superioris) is a facial muscle located above the upper lip close to the opening of the oral cavity. It is classified as the buccolabial facial muscle. The levator labii superioris lifts the upper lip.

Levator labii superioris with other facial muscles
Levator labii superioris by Anatomy Next
Levator labii superioris
OriginInfraorbital margin of the maxilla
InsertionSkin of the upper lip
ActionLifts the upper lip
InnervationBuccal branch of the facial nerve (CN VII)
   Blood supply      Facial artery, infraorbital artery of the maxillary artery  

 

Origin

The levator labii superioris originates from the infraorbital margin of the maxilla.

 

Insertion

The levator labii superioris inserts into the skin of the upper lip.

Origin and insertion of levator labii superioris
Origin and insertion of levator labii superioris by Anatomy Next

 

Action

Upon activation, the levator labii superioris lifts the upper lip. Contractions of the muscle produce facial expressions of worry and anxiety.

Action of levator labii superioris
Action of levator labii superioris by Anatomy Next

 

Innervation

The levator labii superioris is innervated by the buccal branch of the facial nerve (CN VII).

 

Blood supply

The levator labii superioris receives blood supply from the facial artery and infraorbital branch of the maxillary artery.