maxillary nerve

8/13/2019 Maxillary Nerve

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MAXILLARY NERVE &

PTERYGOPALATINE GANGLION

D.R VINAITHA M.scTutor -Dept Anatomy
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Distribution of 5th Cranial Nerve
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v 2nd division of Trigeminal

nerve

v Purely sensory

v Sensations from the maxillary

teeth, the skin between

the palpebral fissure and

the mouth, and from the nasal

cavity and sinuses

v Intermediate between

Opthalmic and Mandibular
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COURSE OF MAXILLARY NERVE


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COURSE

Middle of trigeminal ganglion as plexiform band

Lateral aspect of Cavernous sinus

Foramen Rotundum

Cross Pterygopalatine fossa

Enters orbit thru Inferior orbital fissure


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BRANCHES

In the middle cranial Fossa: meningeal br.

In pterygopalatine Fossa:

Ganglionic

Zygomatic br

Posterior superior alveolar br

In infra-orbital canal:

Middle superior alveolar br

Anterior superior alveolar br

On the face:palpebral br

Nasal br

Superior labial br


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A. Zygoticaticotemporal

B. Zygomaticofacial

C. Post. Sup. Alveolar Brs

D. Nasopalatine

E. Greater Palatine

F. Lesser Palatine

G. Mid. & Ant. Alveolar Brs

H. Infraorbital


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Trigeminalnerve distribution in face

Maxillary nerve


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PTERYGOPALATINE GANGLION

(Sphenopalatine Ganglion, Ganglion of Meckel)

v Triangular

v Reddish grey

v Below maxillary nerve

v Pterygopalatine fossa

v Largest peripheral parasympathetic ganglion

v Receives a sensory, a motor, and a sympathetic root

v sensory root - derived from two sphenopalatine branches of the

maxillary nerve

v motor root - derived from the nervus intermedius through the

greater superficial petrosal nerve

v sympathetic root - derived from the carotid plexus through the

deep petrosal nerve - join to form the nerve of the pterygoid canal

before their entrance into the ganglion
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Connections

Preganglionic fibers:

Lacrimatory nucleus in the lower pons

Facial nerve

Nervous intermedius

Greater petrosal nerve

Nerve of pterygoid canal

Pterygopalatine ganglion


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Postganglionic fibers

Pterygopalatine ganglion

Maxillary nerve

Zygomatic nerve Greater palatine nerve

Lacrimal nerve Nasal, palatine gland

Lacrimal gland

Pharyngeal glands


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Sympathetic: deep petrosal nerve + greater petrosal

nerve nerve of pterygoid canal sensory to

mucous membrane of nose, palate, nasopharynx

Sensory: through maxillary nerve orbital, nasal, palataland pharyngeal branches


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APPLIED ANATOMY

Pterygopalatine ganglion ganglion of hay fever

The parasympathetic supply to the nose is from

the lacrimal nucleus with the fibers leaving the brain stem

in the nervus intermedius. They relay in the pterygopalatine

ganglion before entering the nasal cavity. An increase in

parasympathetic tone causes swelling and increased

secretion from the nasal mucosa. The pterygopalatine

ganglion is sometimes called the hay fever ganglion


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THANK Q

maxillary nerve

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