Subarcuate fossa

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Subarcuate fossa
Gray138.png
Left temporal bone. Inner surface. (Subarcuate fossa not labeled, but aquaeductus vestibuli labeled at lower right.)
Gray193.png
Base of the skull. Upper surface. (Subarcuate fossa not labeled, but temporal bone is identified in pink, and "Eminentia arcuata" is labeled.)
Latin Fossa subarcuata ossis temporalis
Gray's p.143
Anatomical terms of bone

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[1] 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.[2][3]

References[edit]

  1. ^ Mom T, Chazal J, Gabrillargues J, Gilain L, Avan P (2005). "Cochlear blood supply: an update on anatomy and function". Fr ORL 88: 81–8. 
  2. ^ Gannon PJ, Eden AR, Laitman JT (Oct 1988). "The subarcuate fossa and cerebellum of extant primates: comparative study of a skull-brain interface". Am J Phys Anthropol. 77 (2): 143–64. doi:10.1002/ajpa.1330770202. PMID 3207165. 
  3. ^ Jeffery N, Ryan TM, Spoor F (Aug 2008). "The primate subarcuate fossa and its relationship to the semicircular canals part II: adult interspecific variation". J Hum Evol. 55 (2): 326–39. doi:10.1016/j.jhevol.2008.02.010. PMID 18395770. 

External links[edit]

This article incorporates text from a public domain edition of Gray's Anatomy.