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 this presented case, bilateral internal auditory meatus infiltration with metastatic adenocarcinoma was an unexpected finding.
The width of the internal auditory meatus is variable.
In this article we report a new case of large bilateral internal auditory meatus, and we discuss the possibility that a developmental abnormality underlies superior semicircular canal dehiscence (SSCD) syndrome.
CT confirmed the abnormally wide internal auditory meatus bilaterally (figure 2).
The left external auditory meatus was stenotic and almost completely occluded.
During the procedure, he was found to have ossification of the external auditory meatus.
In this article, we share our experience with the use of an angled pediatric rigid endoscope during tympanoplasty to visualize the middle ear structure through the external auditory meatus without the need for lowering the scutum.
Otoscopy identified what appeared to be a well-defined, skin-covered, 4-mm mass arising from the anteroinferior aspect of the external auditory meatus.
Intracranial neurilemmomas, such as acoustic neuromas, may develop within the internal auditory meatus and compress the VIIIth cranial nerve, leading to symptoms such as deafness and tinnitus.