Thomadaki Fall 2010
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| 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]
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| Branches of CNV | VI - opthalmic
V2 - maxillary
V3 - mandibular
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| V1 (opthalmic) exits the skull via ____ | SOF
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| V2 (maxillary) exits the skull via _____ | Foramen Rotundum
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| 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
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| Sensory function of CN V | Sensory to face, scalp, teeth, most of tongue, oral & nasal mucosa, dura mater, cerebral blood vessels.
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| 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
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| 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
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| Exam for CN V | Touch by cotton swab; pain by pinprick; temp; corneal reflex; jaw reflex; masticatory movements
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| Lesion to CN V | Trigeminal neuralgia (tic doulareux), facial anesthesia or numbness, inability or difficulty to bite down
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Created by:
mrw2013
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