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Trigeminal nerve
Dental Anatomy DENT-110
| Question | Answer |
|---|---|
| V1 | Opthalmic Nerve |
| V2 | Maxillary Nerve |
| V3 | Mandibular Nerve |
| Only Afferent | Opthalmic and Maxillary-Sensory root |
| Afferent and Efferent root | Mandibular nerve-motor root |
| Opthalmic nerve | smallest division of the trigeminal nerve, serves as afferent nerve for conjunctiva, cornea, eyeball, orbit, forehead, ethmoidal and frotal sinuses, part of dura mater and parts of nasal cavity |
| Passageway for the opthalmic nerve | superior orbital fissure |
| Other nerves that pass through the superior orbital fissure | occulomotor, trochlear, abducens |
| Three major branches of V1 | Frontal, lacrimal, nasocillary |
| Branches of frontal nerve | supraorbital, supratrochlear |
| branches of nasocillary nerve | infratrochlear, cillary, anterior ethmoidal and posterior ethmoidal nerves |
| branch of anterior ethmoidal nerve | external and internal nasal nerves |
| Parasympathetic function of the lacrimal nerve | production of tears |
| Afferent nerve that runs superior to the optic nerve to join the frontal and lacrimal nerves near the superior orbital fissure of the sphenoid bone | Nasocillary nerve |
| Main branches of V2 | zygomatic, infraorbital, posterior superior alveolar, greater and lesser palatine, nasopalatine nerves |
| Pterygopalatine fossa | location for the merger of nerves that form the maxillary nerve |
| Location for the entry of the maxillary nerve to the skull | foramen rotundum |
| location for the entry of the zygomatic nerve | inferior orbital fissure |
| branches of the zygomatic nerve | zygomaticalfacial and zygomaticaltemporal nerves |
| afferent nerve for the skin of the cheek | zygomaticofacial nerve |
| afferent nerve for the skin of the temporal region | zygomaticotemporal nerve |
| Infraorbital block | anesthetizes the IO as well as both the anterior and middle superior alveolar nerves |
| afferent nerve for the maxillary central incisors, lateral incisors, and canines, as well as associated labial perodontium and gingiva to the midline | Anterior superior alveolar nerve |
| crossover innervation | the overlap of terminal nerve fibers from the contralateral side of the dental arch |
| Afferent nerve for the maxillary premolars and the mesiobuccal root of the maxillary first molar and associated buccal periodontium and gingiva | middle superior alveolar nerve |
Created by:
SonyaP
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