Deep petrosal nerve

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 subject #200 892
From internal carotid plexus
To nerve of pterygoid canal

The deep petrosal nerve (large deep petrosal nerve) is given off from the carotid plexus, and runs through the carotid canal lateral to the internal carotid artery.

It then enters the cartilaginous substance which fills the foramen lacerum, and joins with the greater superficial petrosal nerve to form the nerve of the pterygoid canal, also known as the Vidian nerve.

It carries postsynaptic sympathetic nerve fibers to the pterygopalatine ganglion, also known as the sphenopalatine ganglion.

These fibers innervate blood vessels and mucous glands of the head and neck.

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External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.



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  • 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

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  • 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

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