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Macula cribrosa

Last revised by Dr Daniel J Bell on 02 Jun 2020

The macula cribrosa is part of the vestibule of the inner ear, located medially between it and the lateral most part of the internal acoustic meatus. It represents clusters of small foramina that permit the passage of vestibular nerve fibers from the internal acoustic foramen into the vestibule. 

It is divided into three parts 1,2

  1. macula cribrosa superior (a.k.a. Mike's dot): utriculoampullary nerve fibers
  2. macula cribrosa media: saccular nerve fibers
  3. macula cribrosa inferior: posterior ampullary nerve fibers

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