Medial pterygoid nerve

The medial pterygoid nerve (or internal pterygoid nerve) is a branch of the mandibular nerve that innervates the medial pterygoid muscle, tensor veli palatini and tensor tympani.[1]

Medial pterygoid nerve
Mandibular division of the trigeminus nerve. (Internal pterygoid nerve visible but not labeled.)
Mandibular division of trifacial nerve, seen from the middle line. Nerve to medial pterygoid labeled at bottom.
Details
FromMandibular nerve
InnervatesMedial pterygoid, tensor veli palatini, tensor tympani
Identifiers
LatinNervus pterygoideus internus
nervus pterygoideus medialis
TA98A14.2.01.066
TA26250
FMA53056
Anatomical terms of neuroanatomy
Not to be confused with lateral pterygoid nerve.

Structure

The nerve to the medial pterygoid muscle is a slender branch of the mandibular nerve which enters the deep surface of the muscle; it gives off one or two filaments to the otic ganglion.

The nerve provides physical support for the otic ganglion, but is neurologically distinct.

Branches

Additionally, the tensor veli palatini is innervated by the nerve to tensor veli palatini, a branch of the nerve to the medial pterygoid. Of the five paired skeletal muscles to the soft palate, tensor veli palati is the only muscle not innervated by the pharyngeal plexus.

References
  1. Tomo, S; Nakajima, K; Tomo, I; Nodai, E; Kobayashi, S (April 1995). "The morphology and innervation of the lateral pterygoid muscle of the dog". Journal of Anatomy. 186: 435–439. PMC 1167204. PMID 7649845.

This article incorporates text in the public domain from page 894 of the 20th edition of Gray's Anatomy (1918)


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