Tags: Anatomical Structure, Bone.
The medial surface of the labyrinth of ethmoid consists of a thin lamella which descends from the under surface of the cribriform plate and ends below in a free convoluted margin the middle nasal concha. It is rough and marked above by numerous grooves directed nearly vertically downward from the cribriform plate; they lodge branches of the olfactory nerves which are distributed to the mucous membrane covering the superior nasal concha.
