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Neuro II - CN V

Thomadaki Fall 2010

QuestionAnswer
Origin of CN V - Nucleus of spinal tract of trigeminal [P&T]/ midpons - C5 - Chief sensory nucleus [touch]/midpons - Mesencephalic nucleus [proprioception]/ midpons-midbrane - Motor nucleus [muscles of mastication]
Branches of CNV VI - opthalmic V2 - maxillary V3 - mandibular
V1 (opthalmic) exits the skull via ____ SOF
V2 (maxillary) exits the skull via _____ Foramen Rotundum
V3 (mandibular) exits the skull via _____ and the meningeal branch of V3 re-enters the skull with the ______ through ________ Foramen Ovale; middle meningeal artery, foramen spinosum
Sensory function of CN V Sensory to face, scalp, teeth, most of tongue, oral & nasal mucosa, dura mater, cerebral blood vessels.
Sensory fibers coming in from all 3 divisions are _______ cells whose cells bodies are in the _____ or _____ ganglion or ________ (in the case of parasympathetic) Pseudounipolar; trigeminal, semilunar, mesencephalic
Motor function of CN V - Muscles of mastication (masseter, temporalis, medial & lateral pterygoid muscles) - Tensor tympani & tensor veli palatini muscles - Myloyoid & ANTERIOR BELLY of digastric muscle
Exam for CN V Touch by cotton swab; pain by pinprick; temp; corneal reflex; jaw reflex; masticatory movements
Lesion to CN V Trigeminal neuralgia (tic doulareux), facial anesthesia or numbness, inability or difficulty to bite down
Created by: mrw2013