Definition: a minute canal passing from the inferior surface of the petrous portion of the temporal bone between the jugular fossa and carotid canal to the floor of the tympanic cavity. Located in the wedge of bone separating the jugular canal and carotid canal, it transmits the tympanic branch of the glossopharyngeal nerve.
Synonym(s): canaliculus tympanicusTA, Jacobson canal, tympanic canal
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