Frontal bone. Inner surface. ("Foramen caecum" visible as black hole near center bottom.)
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| colspan="2" |Base of the skull. Upper surface. ("Foramen caecum" is third label from the top.)
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|Latin
|colspan="2"|f. caecum ossis frontalis
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|
|colspan="2"|[subject #33 ]
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|System
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|- class="hiddenStructure"
|Precursor
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|MeSH
|colspan="2"|[]
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|Dorlands/Elsevier
|colspan="2"|[f_12/12372871]
|}
The frontal crest of the frontal bone ends below in a small notch which is converted into a foramen, the foramen cecum, by articulation with the ethmoid.
This foramen varies in size in different subjects, and is frequently impervious; when open, it transmits a vein from the nose to the superior sagittal sinus.
