Greater petrosal nerve

Greater petrosal nerve

Infobox Nerve
Name = PAGENAME
Latin = nervus petrosus major
GraySubject = 202
GrayPage = 903



Caption = The course and connections of the facial nerve in the temporal bone.



Caption2 = Plan of the facial and intermediate nerves and their communication with other nerves.
Innervates =
BranchFrom = facial nerve
BranchTo = nerve of pterygoid canal
MeshName =
MeshNumber =
DorlandsPre = n_05
DorlandsSuf = 12566464
The greater petrosal nerve is a nerve in the skull that branches from the facial nerve; it forms part of a chain of nerves that innervates the lacrimal gland. The fibres have synapses in the pterygopalatine ganglion.

tructure

The greater petrosal nerve is a branch of the facial nerve that arises from the geniculate ganglion, a part of the facial nerve inside the facial canal. It enters the middle cranial fossa through the hiatus for the greater petrosal nerve (on the anterior surface of the petrous temporal bone). It proceeds towards the foramen lacerum, where it joins the deep petrosal nerve (sympathetic) to form the nerve of the pterygoid canal. The nerve of the pterygoid canal passes through the pterygoid canal to reach the pterygopalatine ganglion.

Function

The greater petrosal nerve carries gustatory (taste) and parasympathetic fibres. Postganglionic parasympathetic fibres from pterygopalatine ganglion supply lacrimal gland and the mucosal glands of the nose, palate, and pharynx. The gustatory fibres do not relay in the ganglion and are distributed to the palate.


=Additional

External links

*
* (NormanAnatomyFig|VII)
* [http://anatomy.med.umich.edu/nervous_system/ear_ans.html University of Michigan Medical School "Dissector Answers - Ear and Nasal Cavity"]


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Look at other dictionaries:

  • greater petrosal nerve — n a mixed nerve that contains mostly sensory and some parasympathetic fibers, arises in the geniculate ganglion, joins with the deep petrosal nerve at the entrance of the pterygoid canal to form the Vidian nerve, and as part of this nerve sends… …   Medical dictionary

  • Hiatus for greater petrosal nerve — Infobox Bone Name = Hiatus of the facial canal Latin = hiatus canalis nervi petrosi majoris, hiatus canalis facialis GraySubject = 34 GrayPage = 142 Caption = Coronal section of right temporal bone. (Bristle in hiatus of facial canal labeled at… …   Wikipedia

  • Petrosal nerve — (a nerve traveling through the petrous portion of the temporal bone) may refer to:*Deep petrosal nerve *Greater petrosal nerve (also known as the greater superficial petrosal nerve) *Lesser petrosal nerve (also known as the lesser superficial… …   Wikipedia

  • petrosal nerve — n any of several small nerves passing through foramina in the petrous portion of the temporal bone: as a) DEEP PETROSAL NERVE b) GREATER PETROSAL NERVE c) LESSER PETROSAL NERVE …   Medical dictionary

  • greater superficial petrosal nerve — n GREATER PETROSAL NERVE …   Medical dictionary

  • greater petrosal groove — groove for greater petrosal nerve sulcus nervi petrosi majoris …   Medical dictionary

  • petrosal nerve greater — petrosal nerve, greater superficial nervus petrosus major …   Medical dictionary

  • deep petrosal nerve — n a sympathetic nerve that originates in the carotid plexus, passes through the cartilage of the Eustachian tube, joins with the greater petrosal nerve at the entrance of the pterygoid canal to form the Vidian nerve, and as part of this nerve… …   Medical dictionary

  • Deep petrosal nerve — Nerve: Deep petrosal nerve Alveolar branches of superior maxillary nerve and sphenopalatine ganglion. (Deep petrosal labeled at bottom, center right.) Latin n. petrosus profundus Gray s …   Wikipedia

  • hiatus for greater petrosal nerve — h. canalis nervi petrosi majoris …   Medical dictionary

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