The inferior tympanic canaliculus is a small bony passageway that lies within the petrous portion of the temporal bone.
It is also located medially to the stylomastoid foramen and the styloid process of the temporal bone.
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.
- 1. Goravalingappa R. Cochlear implant electrode insertion: Jacobson's nerve, a useful anatomical landmark. (2002) Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India. 54 (1): 70-3. doi:10.1007/BF02911015 - Pubmed
- 2. Clinical anatomy of the tympanic nerve: A review. (2014) World Journal of Otorhinolaryngology. 4 (4): 17. doi:10.5319/wjo.v4.i4.17
- 3. Lekakis GK. Philipp Friedrich Arnold, Ludvig Levin Jacobson and their contribution to head and neck anatomy. (2003) The Journal of laryngology and otology. 117 (1): 28-31. doi:10.1258/002221503321046603 - Pubmed