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Mandibular Nerve Formation Course Relations Branches Anatomy mbbs education
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• Largest mixed branch of trigeminal N • • Nerve of first pharyngeal arch • • Associated with Otic submandibular ganglion • Formation Divisions • • Begins in middle cranial fossa • ! Large sensory root • – arises from lateral part of trigeminal ganglion • Leaves the cranial cavity through foramen ovale • ! Small motor root • Passes deep to the trigeminal ganglion • Passes through foramen ovale • Joins with sensory root below the foramen forming the main trunk • Lies in the infratemporal fossa, on the tensor veli palatini, deep to lateral pterygoid • Then divides into anterior posterior divisions • Branches from Main trunk • • Meningeal N • – enters the cranial cavity through • foramen spinosum • Supplies the meninges of middle cranial fossa • • N to medial pterygoid • Supplies medial pterygoid • Gives a motor root to otic ganglion without relay supplies tensor veli palatini tensor tympani • Branches from anterior division • • 3 motor branches • Masseteric N • Deep temporal Ns • N to lateral pterygoid !1 sensory branch • Buccal N • Branches from posterior division • • Mostly sensory • ! Auriculotemporal N • Arises by two root • Encircles Middle meningeal A • Auricular part – supplies skin of tragus, upper part of pinna, external acoustic meatus tympanic membrane • Temporal part – supplies temple, TMJ, carries secretomotor sensory fibres to parotid gland, • ! Lingual N - • ! Inferior alveolar N • • • ------------------------------------------------------------------------------------------------------------- • • My website - https://human-anatomy-lessons.busines... • My Blog - https://human-anatomylessons.blogspot... • ---------------------------------------------------------------------------------------------------------------- • Follow me in blogspot - https://human-anatomylessons.blogspot... _________________________________________________________________________________________________________________ Visit my blogs - https://humananatomyonline.in/ • Contact me @ https://t.me/humananatomylessons
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