Subarcuate fossa - Fossa subarcuata
The subarcuate fossa is a depression above and between the internal acoustic opening and the opening of vestibular canaliculs. It 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 which extends backward as a blind tunnel under the superior semicircular canal.
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).
General Anatomy > Bones; Skeletal system > Axial skeleton > Cranium > Temporal bone > Petrous part > Posterior surface of petrous part > Subarcuate fossa