Maxillary nerve

Not to be confused with Axillary nerve.

Maxillary nerve
Alveolar branches of superior maxillary nerve and pterygopalatine ganglion.
Distribution of the maxillary and mandibular nerves, and the submaxillary ganglion.
Details
Latin	Nervus maxillaris
From	Trigeminal nerve
To	Infraorbital nerve, zygomatic nerve, posterior superior alveolar nerve, palatine nerve, nasopalatine nerve, sphenopalatine ganglion
Identifiers
MeSH	A08.800.800.120.760.550
TA
TH	{{#property:P1694}}
TE	{{#property:P1693}}
FMA	{{#property:P1402}}
Anatomical terms of neuroanatomy [[[d:|edit on Wikidata]]]

The maxillary nerve (CN V₂) is one of the three branches or divisions of the trigeminal nerve, the fifth (V) cranial nerve. It comprises the principal functions of sensation from the maxillary, nasal cavity, sinuses, the palate and subsequently that of the mid-face, and is intermediate, both in position and size, between the ophthalmic nerve and the mandibular nerve. Its function is the transmission of sensory fibers from the maxillary teeth, the skin between the palpebral fissure and the mouth, and from the nasal cavity and sinuses.

Structure

It begins at the middle of the trigeminal ganglion as a flattened plexiform band, and, passing horizontally forward, it leaves the skull through the foramen rotundum, where it becomes more cylindrical in form, and firmer in texture. It then crosses the pterygopalatine fossa, inclines lateralward on the back of the maxilla, and enters the orbit through the inferior orbital fissure. It then runs forward on the floor of the orbit, at first in the infraorbital groove and then in the infraorbital canal remaining outside the periosteum of the orbit. It then emerges on the face through the infraorbital foramen and terminates by dividing into palpebral, lateral nasal and labial branches. The nerve is accompanied by the infraorbital branch of (the third part of) the maxillary artery and the accompanying vein.

Branches

Its branches may be divided into four groups, depending upon where they branch off: in the cranium, in the pterygopalatine fossa, in the infraorbital canal, or on the face.

In the cranium

• Middle meningeal nerve in the meninges

From the pterygopalatine fossa

• Infraorbital nerve through Infraorbital canal
• Zygomatic nerve (zygomaticotemporal nerve, zygomaticofacial nerve) through Inferior orbital fissure
• Nasal Branches (nasopalatine) through Sphenopalatine foramen
• Superior alveolar nerves (Posterior superior alveolar nerve, Middle superior alveolar nerve, Anterior superior alveolar nerve)
• Palatine nerves (Greater palatine nerve, Lesser palatine nerve), including the Nasopalatine nerve
• Pharyngeal nerve

In the infraorbital canal

• Anterior superior alveolar nerve
• Infraorbital nerve

On the face

• Inferior palpebral nerve
• Superior labial nerve
• Lateral nasal nerve

Additional Images

• 

  Maxillary nerve

See also

This article uses anatomical terminology; for an overview, see Anatomical terminology.

• Trigeminal nerve
• Cranial nerves

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

• MedEd at Loyola GrossAnatomy/h_n/cn/cn1/cnb2.htm
• cranialnerves at The Anatomy Lesson by Wesley Norman (Georgetown University) (VII)