Fossa (anatomy)

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In anatomy, a fossa (/ˈfɒsə/;[1][2] plural fossas /ˈfɒsəz/, or fossae (/ˈfɒs/ or /ˈfɒs/); from the Latin "fossa", ditch or trench) is a depression or hollow, usually in a bone, such as the hypophyseal fossa, the depression in the sphenoid bone.[3] Some examples include:

Hypophyseal fossa

See also[edit]


  1. ^ OED 2nd edition, 1989.
  2. ^ Entry "fossa" in Merriam-Webster Online Dictionary.
  3. ^ Venieratos D, Anagnostopoulou S, Garidou A., A new morphometric method for the sella turcica and the hypophyseal fossa and its clinical relevance.;Folia Morphol (Warsz). 2005 Nov;64(4):240-7. PMID 16425149