Subarcuate fossa

Subarcuate fossa
Left temporal bone. Inner surface. (Subarcuate fossa not labeled, but aquaeductus vestibuli labeled at lower right.)
File:Gray193.png Base of the skull. Upper surface. (Subarcuate fossa not labeled, but temporal bone is identified in pink, and "Eminentia arcuata" is labeled.)
Details
Latin	Fossa subarcuata ossis temporalis
Identifiers
Dorlands /Elsevier	f_14/12376677
TA
TH	{{#property:P1694}}
TE	{{#property:P1693}}
FMA	{{#property:P1402}}
Anatomical terms of bone [[[d:|edit on Wikidata]]]

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 and the subarcuate artery a branch of the meatal segment of anterior inferior cerebellar artery, which is an end artery that supplies blood to the inner ear ; 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.

It is extensive in most primates (except for great apes) and nearly all mammals. In these animals, the subarcuate fossa houses a part of the cerebellum, the petrosal lobe.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

• Anatomy diagram: 34257.000-2 at Roche Lexicon - illustrated navigator, Elsevier