page_title: Petro-occipital fissure
hierarchical_section_title: Petro-occipital fissure
caption_attribution_description: Base of the en:skull. Inner or cerebral surface.
context_page_description: 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.
context_section_description: 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.
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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