Tympanic canaliculus

Passage of the tympanic branch of the glossopharyngeal nerve through the temporal bone

The tympanic canaliculus is a minute canal in the bony ridge that separates the carotid canal and jugular foramen. The proximal opening of the canal is situated upon the inferior surface of the petrous part of the temporal bone; its distal opening is situated upon the floor of the tympanic cavity. The canal gives passage to the tympanic nerve ) and inferior tympanic artery

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