The superior labial nerve is a nerve of the face. It is a branch of the infraorbital nerve.
It supplies sensation to the skin and mucosa of the upper lip.
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Course
The superior labial nerve arises from the infraorbital nerve (itself a branch of the maxillary division of the trigeminal nerve).
It originates as several branches immediately distal to the infraorbital foramen. They descend behind the levator labii superioris muscle and pass into the upper lip – where they supply cutaneous sensation.
The superior labial nerve communicates with fibres of the facial nerve through the infraorbital plexus.
Sensory Function
The superior labial branches supply sensation to the skin and mucosa of the upper lip.