Saturday, 4 October 2014

Branches Of Trigeminal Nerve

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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