Quick Facts
Origin: Canine fossa of maxilla.
Insertion: Angle of mouth.
Action: Elevates angle of mouth.
Innervation: Zygomatic and buccal branches of facial nerve (CN VII).
Arterial Supply: Superior labial and infraorbital arteries.
Origin
The levator anguli oris muscle originates from the canine fossa of the maxilla, inferior to the infraorbital foramen.
Insertion
The levator anguli oris muscle inserts into the angle of the mouth, along with the zygomaticus major, depressor anguli oris, and orbicularis oris muscles. Additional fibers blend with the skin covering the nasolabial furrow.
Actions
The levator anguli oris muscle elevates the angle of the mouth. This action is used when smiling (Standring, 2016).
List of Clinical Correlates
- Bell’s palsy
References
Standring, S. (2016) Gray's Anatomy: The Anatomical Basis of Clinical Practice. Gray's Anatomy Series 41st edn.: Elsevier Limited.
