Fossa (anatomy)

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Latin fossa
TA A02.0.00.034
FMA 45791
Anatomical terminology

In anatomy, a fossa (/ˈfɒsə/;[1][2] plural 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:

In the Skull:

In the Torso:

In the Upper Limb:

In the Lower Limb:

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