external auditory meatus

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external auditory meatus

[ek′stərn·əl ′ȯd·ə‚tȯr·ē mē′ād·əs]
(anatomy)
The external passage of the ear, leading to the tympanic membrane in reptiles, birds, and mammals.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
External ear was visualized and observations regarding shape, pre-auricular region, external acoustic meatus, anterior surface of each auricle, and earlobe attachment were tabulated.
The control group comprised 46 randomly selected children who came to the pediatric outpatient department with non-ear, nose, and throat (ENT) complaints (e.g., abdominal disorders) and who had no previous history of foreign body in the external acoustic meatus.
Prevalence of collapse and narrowing of the external acoustic meatus when using supra-aural earphones, observed in the study population (N = 436) Observed Condition n Prevalence Bilateral collapse 45 10.3 RE collapse + LE narrowing 5 1.1 LE collapse + RE narrowing 0 -- Bilateral narrowing 36 8.3 RE narrowing + normal LE 6 1.4 LE narrowing + normal RE 3 0.7 RE = right ear; LE = left ear Table 2.
In rare circumstances, patients may exhibit perforation of the tympanic membrane with blood gushing from the external acoustic meatus.13
Figure 1 illustrates the determination of Frankfurt's horizontal plane by positioning a stainless steel wire from highest point of the external acoustic meatus to the lowest point of the orbit, parallel to the floor.
Narrowing of the internal and external acoustic meatus (sensorineural loss) and sclerosis of the skull may occur.
This dressing is not appropriate for large wounds or for wounds that are located in the concha auricularis or the external acoustic meatus.

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