What does V3 or Mandibular Nerve course/contain
located @ inferior angle of trigeminal ganglion, contains initial large GSA, then small SVE (motor comes off lateral aspect of pons)-to- foramen ovale, then unite
What are the 2 branches of V3
Undivided (only 2-3mm in length) & Divided Nerve
What are the 4 sub-branches of the Undivided Nerve?
Meningeal (sensory), Medial Pterygoid (motor), Nerve to Tensor Veli Palatini (motor), and Nerve to Tensor Tympani (motor)
What does the Meningeal Nerve (sensory) course/supply?
turns upward-to- Foramen Spinosum-to reenter brain, supplies sensory to meninges in cranial vault (senses meninges)
What does the Medial Pterygoid Nerve (motor) supply?
Supplies medial pterygoid muscle, to elevate mandible
What does the Nerve to Tensor Veli Palatini (motor) supply?
Supplies muscles of the soft palate, tenses the soft palate and opens the auditory tube during swallowing
What does the Nerve to Tensor Tympani (motor) supply?
Supplies tensor tympani, tenses tympanic membrane or dampens sound
What are the 2 sub-divisions of the Divided Nerve?
Anterior Division (smaller) & Posterior Division (larger)
What are the 5 sub/sub-divisions of the Anterior Division?
Lateral Pterygoid (motor), Masseter (motor), Anterior Deep Temporal (motor), Posterior Deep Temporal (motor), and Buccal (sensory)
What does the Lateral Pterygoid Nerve (motor) supply?
Supplies lateral pterygoid, to protrude the mandible, in class 3 occlusion
What does the Masseter Nerve (motor) supply?
Supplies the masseter muscle & TMJ, to elevate the mandible
What does the Anterior Deep Temporal Nerve (motor) supply?
Supplies anterior portion of temporalis muscle, elevate the mandible
What does the Posterior Deep Temporal Nerve (motor) supply?
Supplies posterior portion of temporalis muscle, retracts the mandible, in class 2 occlusions
What 2 does the Buccal Nerve (sensory) supply?
Supplies Facial Gingiva of Mand Molars & Skin of Cheek
What are the 3 sub/sub-divisions of the Posterior Division?
Auriculotemporal (sensory), Lingual (sensory), and Inferior Alveolar (Mixed)
What does the Auriculotemporal Nerve (sensory/small) supply?
Supplies parotid gland, TMJ, skin of ear, scalp over the temporal region.
What does the Lingual Nerve (sensory) supply?
Supplies Lingual Gingiva of Mand Teeth, FOM, and Anterior 2/3 of tongue
What does the Inferior Alveolar Nerve (mixed) supply/course through?
descends ramus on M (along buccal/lingual), is lateral to lingual nerve, enters mandibular canal to midline, supplies mandibular molars & 2nd Premolar
What are the 3 sub/sub/sub-divisions of the Inferior Alveolar Nerve (mixed)?
Mylohyoid (motor), Mental (sensory), Incisive (sensory)
What does the Mylohyoid Nerve (motor) course/supply?
outside mandibular foramen-to mylohyoid groove, supplies Mylohyoid muscle, Anterior Belly of Digastric, depresses the mandible
What does the Mental Nerve (sensory) course/supply?
exit canal through mental foramen, continues external to midline, supplies skin of chin, lower lip, facial gingiva of mandibular anterior teeth & 1st premolar
What does the Incisive Nerve (sensory) course/supply?
within canal-to midline, supplies mandibular anterior teeth & 1st premolar
What are the stats of the mental foramen?
50% people, mental foramen located @ apex b/n 1st/2nd premolar, 25% mental foramen located at apex of 1st
