Definitions

circular fold

Diaphragma sellae

The pituitary gland is attached to the end of the infundibulum, and is situated in the fossa hypophyseos of the sphenoidal bone, where it is retained by a circular fold of dura mater, the diaphragma sellae; this fold almost completely roofs in the fossa, leaving only a small central aperture through which the infundibulum passes.

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