Trigeminal nerve anatomy. Course and branches.

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