Left temporal bone. Inner surface. (Subarcuate fossa not labeled, but aquæductus vestibuli labeled at lower right.)
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| colspan="2" |Base of the skull. Upper surface. (Subarcuate fossa not labeled, but temporal bone is identified in pink, and "Eminentia arcuata" is labeled.)
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|Latin
|colspan="2"|f. subarcuata ossis temporalis
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|
|colspan="2"|[subject #34 ]
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|System
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|Precursor
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|MeSH
|colspan="2"|[]
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|Dorlands/Elsevier
|colspan="2"|[f_14/12376677]
|}
In the temporal bone, above and between the aquæductus vestibuli is an irregular depression which lodges a process of the dura mater and transmits a small vein; in the infant this depression is represented by a large fossa, the subarcuate fossa, which extends backward as a blind tunnel under the superior semicircular canal.