Trigeminal nerve is the largest cranial nerve which comprises of three branches. Two of which are sensory except Mandibular nerve which is a mixed nerve and the largest branch of the fifth cranial nerve.
Branches:-
V1 (Opthalmic)
V2 (Maxillary)
V3 (Mandibular)
Branches of these three divisions:-
1. Opthalmic Nerve:-
Frontal: Supratrochlear and Supra orbital.
Nasociliary: Posterior ethmoidal, Anterior ethmoidal, Long ciliary, Nerve to ciliary ganglion, Infratrochlear.
Lacrimal: Supplies lateral part of upper eyelid, secretomotor to lacrimal gland.
2. Maxillary Nerve:-
In Middle Cranial Fossa:
Meningeal Branch (Nervous Spinosus).
In Pterygopalatine Fossa:
Ganglionic branch.
Zygomatic: Zygomaticotemporal and Zygomaticofacial.
Posterior Superior Alveolar.
In Infraorbital Canal:
Middle Superior Alveolar.
Anterior Superior Alveolar.
ON FACE:
Infraorbital: Palpebral, Labial, Nasal.
3. Mandibular Nerve:-
TRUNK:
Meningeal Branch (Nervous Spunosus).
Nerve to medial pterygoid (supplies medial pterygoid, tensor veli palatini, tensor tympani).
Anterior Division:
Deep Temporal
Lateral Pterygoid
Masseteric
Buccal
Posterior Division:
Auriculotemporal.
Lingual.
Inferior Alveolar.
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