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The buccal nerve (long buccal nerve) is a sensory nerve of the face arising from the mandibular nerve (CN V3) (which is itself a branch of the trigeminal nerve). It conveys sensory information from the skin of the cheek, and parts of the oral mucosa, periodontium, and gingiva.
The deep branches pass beneath the zygomaticus and the quadratus labii superioris, supplying them and forming an infraorbital plexus with the infraorbital branch of the maxillary nerve. These branches also supply the small muscles of the nose.
The mandibular nerve immediately passes between tensor veli palatini, which is medial, and lateral pterygoid, which is lateral, and gives off a meningeal branch (nervus spinosus) and the nerve to medial pterygoid from its medial side. The nerve then divides into a small anterior division and a large posterior division.
The 42nd edition of Gray's Anatomy (2020) describes a parotid-masseteric fascia as a thin and translucent yet tough fascia that covers the parotid duct, buccal branches of facial nerve (CN VII), and branches of the mandibular nerve where these structures lie upon the surface of the masseter muscle.
Axillary nerve; Brachial plexus; Buccal branch of the facial nerve; Buccal nerve; Cardiac plexus; Cavernous nerves; Cavernous plexus; Celiac ganglia; Cervical branch of the facial nerve; Cervical plexus; Chorda tympani; Ciliary ganglion; Coccygeal nerve; Cochlear nerve; Common fibular nerve; Common palmar digital nerves of median nerve; Deep ...
Unlike most of the other facial muscles, which are innervated by the facial nerve (or CN VII), the muscles of mastication are innervated by the trigeminal nerve (or CN V). More specifically, they are innervated by the mandibular branch, or V 3. The mandibular nerve is both sensory and motor.
Buccal artery: Nerve: Buccal branch of the facial nerve (VII cranial nerve) Actions: The buccinator compresses the cheeks against the teeth and is used in acts such as blowing. It is an assistant muscle of mastication (chewing) and in neonates it is used to suckle. Identifiers; Latin: musculus buccinator [1] TA98: A04.1.03.036: TA2: 2086: FMA ...
The zygomatic branches, cross the zygomatic bone to the orbit. The buccal branches, pass forward to below the orbit and around the mouth. The marginal mandibular branch passes forward to the lower lip and chin. The cervical branch runs forward forming a series of arches over the suprahyoid region to the platysma muscle. [1]