Anatomy
Origin:
Frontal process of maxilla.
Insertion:
Alar cartilage of nose and upper lip.
Key Relations:
Lies medial to levator labii superioris.
Functions
Raises upper lip and opens the nostrils.
Supply
Nerve Supply:
Buccal branch of the facial nerve (CN 7).
Blood Supply:
Lateral nasal artery.
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