Non-neoplastic Conditions of the External and Middle Ear

  • L. Michaels
Part of the Current Histopathology book series (CUHI, volume 16)

Abstract

The auricle develops from six knob-like protuberances, arising from the first and second branchial arches, which fuse to form auricular components, such as the helix, antihelix and tragus. The external auditory meatus is derived from the first branchial groove, a depression of the ectoderm between the first (mandibular) arch and the second (hyoid) arch. The deep extremity of this groove meets the outer epithelium of the corresponding first pharyngeal pouch, separated from it by only a thin layer of connective tissue. The point of meeting produces the tympanic membrane.

Keywords

Tympanic Membrane Chronic Otitis Medium External Otitis External Auditory Meatus Cholesterol Granuloma 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© L. Michaels 1990

Authors and Affiliations

  • L. Michaels
    • 1
  1. 1.Department of Histopathology Institute of Laryngology and OtologyUniversity College and Middlesex School of MedicineLondonEngland

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