Petro-occipital fissure

Petro-occipital fissure

Infobox Anatomy
Name = PAGENAME
Latin = fissura petrooccipitalis
GraySubject = 47
GrayPage = 193


Caption = 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.)


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DorlandsPre = f_08
DorlandsSuf = 12365616
This grooved surface of the foramen magnum is separated on either side from the petrous portion of the temporal 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.

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