|Bone: Ethmoidal spine|
|Sphenoid bone. Upper surface. (Ethmoidal spine visible at top.)|
|Gray's||subject #35 147|
The superior surface of the body of the sphenoid bone (Fig. 145) presents in front a prominent spine, the ethmoidal spine, for articulation with the cribriform plate of the ethmoid; behind this is a smooth surface slightly raised in the middle line, and grooved on either side for the olfactory lobes of the brain.
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