Embryonic Development and Inborn Malformation of theExternal Auditory Meatus

Authors: V. Chrobok *,**;  J. Mejzlík *;  E. Šimáková ***
Authors‘ workplace: ORL oddělení Nemocnice Pardubice, * přednosta prof. MUDr. A. Pellant, DrSc. Ústav zdravotnických studií, Univerzita Pardubice, ** přednosta prof. MUDr. A. Pellant, DrSc. Fingerlandův ústav patologie, FN Hradec Králové, *** přednosta prof. MUDr. I. Šteiner
Published in: Otorinolaryng. a Foniat. /Prague/, , 2002, No. 4, pp. 226-231.


The authors present an account on the anatomy, embryonic development andphysiology of the external auditory meatus.Theyemphasize inparticular the influence of embryonicdevelopment on the migration activity of the ear drum and adjacent osseous parts of the externalauditory meatus. The migration activity plays an important part in the self-cleasing ability of theexternal auditory meatus. The development of the external auditory meatus and tympanic membraneare demonstrated on the authors’ own histological pictures.In the second part the authors present possible developmental malformations of the externalauditory meatus, stenoses, atresias and a double auditory meatus. For successful surgical reconstructionof the external auditory meatus the presence of the deep portion of the osseous auditorymeatus with an intact migration activity is important.

Key words:
external auditory meatus, anatomy, embryology, physiology, developmental defects,atresia, stenosis.

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Audiology Paediatric ENT ENT (Otorhinolaryngology)
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