Function
The lingual nerve supplies general somatic afferent innervation from the mucous membrane of the anterior two-thirds of the tongue.
It also carries nerve fibers that are not part of the trigeminal nerve, including the chorda tympani nerve of the facial nerve, which provides special sensation (taste) to the anterior 2/3 part of the tongue as well as parasympathetic and sympathetic fibers.
The submandibular ganglion is suspended by two nerve filaments from the lingual nerve.
Read more about this topic: Lingual Nerve
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