The motor root originates from the motor nucleus of trigeminal nerve. It has a short course across the middle cranial fossa, after which it exits the skull via the foramen ovale, and enters the infratemporal fossa. The sensory root of the mandibular nerve originates from the trigeminal ganglion. Motor: Masticatory muscles, mylohyoid muscle, anterior belly of digastric muscle, tensor veli palatini muscle, tensor tympani muscle
ANTERIOR BELLY OF DIGASTRIC IMUSCLE NNERVATION SKIN
Sensory: Skin of the buccal region, sensory supply to the tongue (anterior ⅔), temporal region
Inferior alveolar nerve → nerve to mylohyoid muscle → muscular branch to anterior belly of digastric muscle Nerve to medial pterygoid muscle → Nerve to tensor veli palatini, Trigeminal ganglion (middle cranial fossa) -> foramen ovale -> infratemporal fossaīranches of mandibular nerve to otic ganglion Mixed: motor, sensory and autonomic fibers Key facts about the mandibular nerve Origin In this article we will discuss the anatomy, functions and clinical notes related to the mandibular division of the trigeminal nerve. Moreover, it is responsible for motor innervation of the masticatory muscles as well as the muscles that originate from the first pharyngeal arch. More specifically, the mandibular nerve transmits the sensory information from the lower third of the face, including the lower lip, mandible, preauricular and temporal areas, as well as the meninges and anterior and middle cranial fossae.
Both divisions further divide into smaller branches that innervate the structures of the face. Once it reaches the viscerocranium, it divides into two divisions: anterior and posterior. The mandibular nerve originates from the trigeminal ganglion of Gasser and exits the skull through the foramen ovale. It is a mixed nerve, meaning that it contains both motor and sensory fibers. The mandibular nerve, or the mandibular division of the trigeminal nerve (CN V3), is the third division of the trigeminal nerve (CN V) which innervates parts of the human face. Mandibular division of trigeminal nerve, Cranial nerve V₃
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