Petro-occipital fissure

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Petro-occipital fissure
Base of the skull. Upper surface. (Petro-occipital fissure is not labeled, but petrous portion is bottom part of temporal bone, in pink, and occipital bone is at bottom, in blue.)
Latin fissura petrooccipitalis
TA A02.1.00.047
FMA 75039
Anatomical terminology

This grooved surface of the foramen magnum is separated on either side from the petrous portion of the temporal bone by the petro-occipital fissure, which is occupied in the fresh state by a plate of cartilage; the fissure is continuous behind with the jugular foramen, and its margins are grooved for the inferior petrosal sinus.


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

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