Levator Labii Superioris Alaeque Nasi

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The Levator Labii Superioris Alaeque Nasi is a muscle of facial expression of the nose and a muscle of fascial expression of the mouth.

The muscles of facial expression of the nose are:

• Procerus
• Nasalis
• Depressor Septi Nasi
• Levator Labii Superioris Alaeque Nasi

The muscles of facial expression of the mouth are:

• Levator Labii Superioris Alaeque Nasi
• Levator Labii Superioris
• Zygomaticus Minor
• Zygomaticus Major
• Levator Anguli Oris
• Risorius
• Depressor Anguli Oris
• Depressor Labii Inferioris
• Mentalis
• Buccinator
• Orbicularis Oris
• Platysma

The Levator Labii Superioris Alaeque Nasi has two parts: Medial Slip and Lateral Slip.

ATTACHMENTS:

• Maxilla to the upper lip and the nose.
  • The lateral slip attaches into the upper lip.
  • The medial slip attaches into the nose.

ACTIONS:

• Elevates the upper lip.
• Flares the nostril.

NOTE: Flaring the nostrils is functionally important for the intake of a deep breath. It is also important for the facial expression of anger.