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Trigeminal Nerve
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Trigeminal Nerve

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Trigeminal nerve anatomy. ...

Trigeminal nerve anatomy.
Course and branches.

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  • 1. Trigeminal Nerve
  • 2. Trigeminal Nerve The 5th and the largest cranial nerve. Provides motor innervation to the muscles of mastication.
  • 3. Trigeminal Nerve Emanating from the pons: Sensory root Contains the central processes of the neurons whose cell bodies are found in the trigeminal (semilunar) ganglion, the sensory ganglion of the trigeminal nerve. Motor root Courses beneath the trigeminal ganglion, proceeds medial to the sensory root (joins mandibular division)
  • 4. Parasympathetic Ganglia Ciliary ganglion spincter pupillae, ciliary muscle Pterygopalatine ganglion lacrimal gland, glands of nasal cavity Submandibular ganglion submandibular and sublingual gland Otic ganglion parotid gland
  • 5. Parasympathetic Ganglia Ciliary ganglion spincter pupillae, ciliary muscle Pterygopalatine ganglion lacrimal gland, glands of nasal cavity Submandibular ganglion submandibular and sublingual gland Otic ganglion parotid gland
  • 6. OPHTHALMIC NERVE V1 Tentorial branches are supplied to the tentorium. Superior orbital fissure The lacrimal Frontal Nasociliary nerves
  • 7. OPHTHALMIC NERVE V1
  • 8. OPHTHALMIC NERVE V1 Lacrimal Nerve: Lacrimal glands Conjunctiva Lateral eyelid Scretomotor innevation (pterygopalatine( Lacrimal gland
  • 9. OPHTHALMIC NERVE V1 Frontal Nerve: Supratrochlear Conjunctiva Medial eyelid forehead Supraorbital Frontal sinus Upper lid Forehead Scalp Lambdoidal suture
  • 10. OPHTHALMIC NERVE V1 Nasociliary Nerve: Infratrochlear Conjunctiva Eyelid Lacrimal sac Carnucula Side of the nose Ant. Post. Ethmoidal Ala Globe of the nose
  • 11. OPHTHALMIC NERVE V1 Nasociliary Nerve: Internal nasal Mucous membrane of nasal cavity Long ciliary Iris Cornea Ciliary ganglion
  • 12. Maxillary Nerve V2 Side of the nose Cheek; Eyelids; Mid-face; Maxilary Sinus Nasopharynx; Tonsil; Palate; Gingiva, Teeth,
  • 13. Maxillary Nerve V2 Foramen rotundem >> pterygopalatine fossa >> inferior orbital fissure
  • 14. Maxillary Nerve V2 Zygomatic: Zygomaticofacial Cheek Zygomaticotemporal nerves Skin side of forehead Pterygopalatine nerves Lacrimal glands
  • 15. Maxillary Nerve V2 Orbital Greater Palatine: Pterygopalatine >> greater palatine formen Lesser palatine nerve Posterior Superior Nasal Sphenopalatine foramen Nasopalatine Pharyngeal
  • 16. Maxillary Nerve V2 Posterior Superior Alveolar Pterygopalatine fossa Posterior superior alveolar foramen. Infraorbital: Floor of orbit Middle superir Anterior superior Inferior palpebral External nasal Superior labial
  • 17. Mandibular Nerve V3
  • 18. Mandibular Nerve V3 Foramen Ovale Otic Ganglion Parotid gland
  • 19. Mandibular Nerve V3 Mandibular Trunk: Recurrent Meningeal Medial Pterygoid Tensor tympani Tenso veli palatini Otic Ganglion
  • 20. Mandibular Nerve V3 Anterior Division: Deep temporal Lateral perygoid Messetric Buccal from the trigeminal ? from the inferior alveolar nerve ?
  • 21. Mandibular Nerve V3 Posterior Division: Lingual >chordatympani Inferior Alveolar Mental incisive Mylohyiod Nerve Ant. Digastric
  • 22. Mandibular Nerve V3 Posterior Division: Auriculotemporal Loop around meningeal Superficial temporal Articular branches Anterior auricular Parotid gland
  • 23. Thank You