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mastoid cell

   Also found in: Dictionary/thesaurus, Medical 0.01 sec.
mastoid cell [′ma‚stȯid ‚sel]
(anatomy)
One of the compartments in the mastoid portion of the temporal bone, connected with the mastoid antrum and lined with a mucous membrane. Also known as mastoid air cell; mastoid sinus.


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It is not only sinus within the skull, mastoid cells in mastoid bone around the middle ear is also type of sinus.
3) The other theory of development of the mastoid air cell system suggests that the precursors of the mastoid cells are present at birth as periantral, mesenchyme-filled loculi that are visible on histologic sections.
 
 
 
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