Embryonic Development and Inborn Malformation of the
External Auditory Meatus
Chrobok V.*,**, Mejzlík J.*, Šimáková E.***
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, CSc. |
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Summary:
The authors present an account on the anatomy, embryonic development and
physiology of the external auditory meatus.Theyemphasize inparticular the influence of embryonic
development on the migration activity of the ear drum and adjacent osseous parts of the external
auditory meatus. The migration activity plays an important part in the self-cleasing ability of the
external auditory meatus. The development of the external auditory meatus and tympanic membrane
are demonstrated on the authors’ own histological pictures.
In the second part the authors present possible developmental malformations of the external
auditory meatus, stenoses, atresias and a double auditory meatus. For successful surgical reconstruction
of the external auditory meatus the presence of the deep portion of the osseous auditory
meatus with an intact migration activity is important.
Key words:
external auditory meatus, anatomy, embryology, physiology, developmental defects,
atresia, stenosis.
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