Jisho

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神経
Wikipedia definition
1. Mental nerveMental nerve is a general somatic afferent (sensory) nerve which provides sensation to the anterior aspects of the chin and lower lip as well as the buccal gingivae of the mandibular anterior teeth and the premolars. It is a branch of the posterior trunk of the inferior alveolar nerve, which is itself a branch of the mandibular division of the trigeminal nerve (CN V).
Read “Mental nerve” on English Wikipedia
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Read “Mental nerve” on DBpedia

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