Greater petrosal nerve
Nerve in the skull / From Wikipedia, the free encyclopedia
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The greater petrosal nerve (or greater superficial petrosal nerve) is a nerve of the head mainly containing pre-ganglionic parasympathetic fibres[1]:ā370ā which ultimately synapse in the pterygopalatine ganglion. It branches from the facial nerve (CN VII) and is derived from the parasympathetic part of the nervus intermedius component of CN VII, with its cell bodies located in the superior salivary nucleus.[2] In the connective tissue substance of the foramen lacerum,[citation needed] the greater petrosal nerve unites with the (sympathetic) deep petrosal nerve to form the nerve of the pterygoid canal (vidian nerve) which proceeds to the pterygopalatine ganglion.[2]
Greater petrosal nerve | |
---|---|
Details | |
From | facial nerve |
To | nerve of pterygoid canal |
Innervates | parasympathetics to lacrimal glands |
Identifiers | |
Latin | nervus petrosus major |
TA98 | A14.2.01.117 |
TA2 | 6289 |
FMA | 53417 |
Anatomical terms of neuroanatomy |
It forms part of a chain of nerves that provide secretomotor innervation to the lacrimal gland and mucosal glands of nasal cavity and palate.[citation needed]