Extramural air cell

An extramural air cell is one that is not contained within its named parent bone. So, the infraorbital ethmoidal air cells that lie within the maxilla rather than the ethmoidal bone are an example of extramural air cells.

Head and neck anatomy
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Article Information

rID: 1310
System: Head & Neck
Section: Anatomy
Tags: refs, cases
Synonyms or Alternate Spellings:

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