ex·ter·nal a·cous·tic me·a·tus

[TA]

the passage leading inward through the tympanic portion of the temporal bone, from the auricle to the tympanic membrane; it consists of a bony (inner) portion and a fibrocartilaginous (outer) portion, the cartilaginous external acoustic meatus.

Synonym(s): meatus acusticus externus [TA], acoustic meatus (1) , antrum auris, auditory canal, ear canal, external auditory meatus

Farlex Partner Medical Dictionary © Farlex 2012

auditory canal

Either of two passages of the ear, the internal or the external auditory canal.

auditory canal

The 2-part passage through which sound is carried into the cranial cavity. The 1st part or external acoustic meatus, extends to the external surface of the temporal bone and is divided into an outer cartilaginous part and an inner bony part. The 2nd part, the internal acoustic meatues is located in the petrous portion of the temporal bone and is the passage through which the facial, intermediate, and vestibulocochlear nerves and labyrinthine artery pass to the cranial cavity.

auditory canal

external auditory meatus

the canal leading from the PINNA (outer ear) to the ear drum.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Mentioned in

References in periodicals archive

Squamous cell carcinoma of the external auditory canal and middle ear: an operation combined with preoperative chemoradiotherapy and a free surgical margin.

Data Set for the Reporting of Ear and Temporal Bone Tumors: Explanations and Recommendations of the Guidelines From the International Collaboration on Cancer Reporting

Angioleiomyoma of the External Auditory Canal. Otol Neurotol 2016; 37: e171-2.

Leiomyoma of the External Auditory Canal

The otoscopic view of the fluctuating cyst within the external auditory canal. The patient is asked to open and close her mouth resulting in fluctuation of the cyst.

A Rare Cause of a Fluctuating Cystic Lesion in the External Auditory Canal

Markou, "Duplication of the external auditory canal: two cases and a review of the literature," Case Reports in Otolaryngology, vol.

A Case of First Branchial Cleft Fistula Presenting with an External Opening on the Root of the Helical Crus

Patient was evaluated for the fractures with Computerised Tomography of facial skeleton which showed bilateral condylar dislocation posteriorly, causing occlusion of bilateral external auditory canals, with no evidence of any condylar fractures.

A rare case of bilateral posterior temporomandibular joint dislocation

Then the internal tympanum was exposed by lifting and pushing the tympanic flap of ear canal skin through the external auditory canal, after which lesions were cleared from two sides of the tympanum and mastoid (Fig.1 and Fig.2).

Therapeutic outcomes of canal wall up mastoidectomy in combination with Type I tympanoplasty in otitis media

The chorda tympani nerve was separated, anteplaced, and adhered to the posterior wall of the external auditory canal with medical glue to maintain its integrity.

Retaining Chorda Tympani Nerve Integrity During Cochlear Implant Surgery

Kaga and Asato present 25 articles detailing reconstructive surgery for microtia/atresia of the external auditory canal performed jointly by plastic surgeons and otologists, for plastic surgeons, otolaryngologists, speech therapists, teachers, and patients' families.

Microtia and atresia; combined approach by plastic and otologic surgery

(9) Internal auditory canal malformations: They are absent, narrow, or enlarged.

Radiological assessment of the Indian children with congenital sensorineural hearing loss

Clinical studies show that about half of children have wax in their external auditory canal blocking 25% of the view, and one-quarter have wax blocking 50% of the view.

ID consult: improving diagnosis of otitis media

Title: Adenoid Cystic Carcinoma of the External Auditory Canal: A Case Report

Carcinoma adenoide quistico del conducto auditivo externo: reporte de un caso