Inferior tympanic canaliculus

Dr Henry Knipe and Dr Chris Rothe et al.

The inferior tympanic canaliculus is a small bony passageway that lies within the petrous portion of the temporal bone.

Gross anatomy

The inferior tympanic canaliculus is a bony canal that separates the opening of the carotid canal anteromedially from the jugular foramen posterolaterally 1.

It is also located medially to the stylomastoid foramen and the styloid process of the temporal bone.

Internal contents

The inferior tympanic canaliculus contains the inferior tympanic branch of the ascending pharyngeal artery in addition to the tympanic branch of the glossopharyngeal nerve as it passes through to the middle ear to form the tympanic plexus and subsequently the lesser petrosal nerve 2.

History and anatomy

The inferior tympanic canaliculus is also referred to as ‘Jacobsons canal’ and is named after Ludvig Levin Jacobson, a renowned anatomist from Copenhagen who in the early 1800’s described the anatomy of the canal 3.

Share article

Article information

rID: 66087
Synonyms or Alternate Spellings:

Support Radiopaedia and see fewer ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.