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Definition of Facial canal introitus

Facial canal introitus: The entrance to the facial canal, a passage in the temporal bone of the skull through which the facial nerve (the seventh cranial nerve) travels. In anatomy, an introitus is an entrance that goes into a canal or hollow organ.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=8843
Last Editorial Review: 3/19/2012

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