• Source: Maxillary nerve

In neuroanatomy, the maxillary nerve (V2) is one of the three branches or divisions of the trigeminal nerve, the fifth (CN V) cranial nerve. It comprises the principal functions of sensation from the maxilla, 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.




Structure


It begins at the middle of the trigeminal ganglion as a flattened plexiform band then it passes through the lateral wall of the cavernous sinus. It leaves the skull through the foramen rotundum, where it becomes more cylindrical in form, and firmer in texture. After leaving foramen rotundum it gives two branches to the pterygopalatine ganglion. 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 inferior palpebral, lateral nasal and superior 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

Zygomatic nerve (zygomaticotemporal nerve, zygomaticofacial nerve), through the Inferior orbital fissure
Nasopalatine nerve, through the sphenopalatine foramen
Posterior superior alveolar nerve
Greater and lesser palatine nerves
Pharyngeal nerve



In the infraorbital canal

Middle superior alveolar nerve
Anterior superior alveolar nerve
Infraorbital nerve



On the face

Inferior palpebral nerve
Superior labial nerve
Lateral nasal nerve




Function


The Maxillary nerve gives cutaneous branches to the face. It also carries parasympathetic preganglionic fibers (sphenopalatine) and postganglionic fibers (zygomatic, greater and lesser palatine and nasopalatine) to and from the pterygopalatine ganglion.




Additional images











See also



Trigeminal nerve
Cranial nerves
Alveolar nerve (Dental nerve)




References


This article incorporates text in the public domain from page 889 of the 20th edition of Gray's Anatomy (1918)




= Books

=
Monkhouse, Stanley (2006). Cranial nerves - functional anatomy. Cambridge. ISBN 0-521-61537-2.
Feneis, Heinz; Dauber, Wolfgang (2007). Pocket Atlas of Human Anatomy (5th ed.). Thieme. pp. 400–401.




External links


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

Kata Kunci Pencarian:

• Saraf glosofaringeal
• Maxillary nerve
• Trigeminal nerve
• Infraorbital nerve
• Mandibular nerve
• Maxillary sinus
• Zygomatic nerve
• Maxillary
• Pterygopalatine ganglion
• Posterior superior alveolar nerve
• Anterior superior alveolar nerve