Infraorbital plexus

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Infraorbital plexus
Mandibular division of the trifacial nerve. (Infraorbital labeled at center right.)
From facial nerve, superior labial nerve
Gray's p.891
Anatomical terms of neuroanatomy

The superior labial branches descend behind the Quadratus labii superioris, and are distributed to the skin of the upper lip, the mucous membrane of the mouth, and labial glands. They are joined, immediately beneath the orbit, by filaments from the facial nerve, forming with them the infraorbital plexus.

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This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)