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Lateral Part of Levator Nasolabialis Muscle
Muscular System

Lateral Part of Levator Nasolabialis Muscle

Pars lateralis musculi levatoris nasolabialis

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Quick Facts

Origin: Frontal process of maxilla.

Insertion: Upper lip.

Action: Elevates and everts upper lip.

Innervation: Zygomatic and buccal branches of facial nerve (CN VII).

Arterial Supply: Superior labial artery.

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The levator nasolabialis muscle arises from the superior portion of the frontal process of the maxilla.


The levator nasolabialis muscle runs inferolaterally, where the fibers divide into medial and lateral parts:

- The medial part of the attaches to the lateral portion of the major alar cartilage and the overlying subcutaneous tissue.

- The lateral part extends inferiorly and inserts into the upper lip where it blends with the surrounding muscles e.g. the orbicularis oris.


The lateral part of the levator nasolabialis elevates and everts the upper lip (Standring, 2016).

List of Clinical Correlates

- Bell’s palsy


Standring, S. (2016) Gray's Anatomy: The Anatomical Basis of Clinical Practice. Gray's Anatomy Series 41st edn.: Elsevier Limited.

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