What is the role of the nervus intermedius in Bell palsy (idiopathic facial paralysis) (IFP)?

Updated: Jun 14, 2019
  • Author: Danette C Taylor, DO, MS, FACN; Chief Editor: Selim R Benbadis, MD  more...
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The nervus intermedius is composed of sensory fibers from the tongue, mucosa, and postauricular skin, as well as parasympathetic fibers to the salivary and lacrimal glands. These fibers then synapse with the submandibular ganglion, which has fibers that supply the sublingual and submandibular glands. The fibers from the nervus intermedius also supply the pterygopalatine ganglion, which has parasympathetic fibers that supply the nose, palate, and lacrimal glands.

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