auditory meatus


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Related to auditory meatus: External Auditory Meatus

meatus

 [me-a´tus] (pl. mea´tus) (L.)
an opening or passage, especially one leading to the body surface. adj., adj mea´tal.
acoustic meatus (meatus acus´ticus) either of two passages in the ear; the external acoustic meatus leads from the auricle to the tympanic membrane (eardrum) and the internal acoustic meatus is for passage of nerves and blood vessels.
auditory meatus acoustic meatus.
meatus na´si (meatus of nose) one of the three portions of the nasal cavity on either side of the septum: inferior (meatus nasi inferior), middle (meatus nasi medius), and superior (meatus nasi superior).
ureteral meatus ureteral orifice.
meatus urina´rius (urinary meatus) the opening of the urethra on the body surface, through which urine is discharged.

auditory meatus

Etymology: L, audire, to hear, meatus, passage
1 the external auditory meatus, a tubelike channel of the external ear extending from the auricle to the tympanum of the middle ear.
2 the internal auditory meatus, a short channel extending from the petrous part of the temporal bone to the fundus near the vestibule. It contains the eighth cranial nerve. Also called auditory canal.
References in periodicals archive ?
In our view although Permeatal underlay technique without raising the tympano-meatal flap is difficult because of less space of maneuverability in the external auditory meatus.
Position of dorsal rim of auditory meatus--approaches squamosal suture to within width of auditory meatus (1); separated from it by at least the width of the meatus (2).
One researcher extended the carpenter s level from the "patient's" external auditory meatus to the collection system and adjusted the level until it was level with the horizontal.
Related to these problems is the potentially serious hazard to those prescribed behind-the-ear or intra-canal hearing aids of impaction of a hearing-aid button battery in the external auditory meatus.
The fact that there was a diverticulum bulging into the hypo-and lower mesotympanum and posterior external auditory meatus leads us to think that the conductive hearing loss was likely due to interference with the tympanic membrane.
In urban areas, patients of this age group worked in busy market areas where the chances of dust and dirt entering the external auditory meatus and subsequent scratching and trauma.
The doctor examined him and found an oedematous and narrowed external auditory meatus.
4) Sensorineural hearing loss secondary to nerve compression in the internal auditory meatus has been reported.
Eleven dogs were presented with history of swelling at the base of affected ear, head tilting to affected side, constant ear scratching, head shaking and rubbing of ears against other objects with offensive odour and oozing from auditory meatus varying from 2-4 months.
Tumors tend to involve the middle ear more often than the internal auditory meatus, but direct extension from the central nervous system must be radiographically or clinically excluded before a diagnosis of ectopic or primary ear and temporal bone meningioma is rendered.