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Tentorium cerebelli seen from above
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The (") is an extension of the
Dura Mater that separates the cerebellum from the inferior portion of the
Occipital Lobe s.
The tentorium cerebelli is an arched
Lamina , elevated in the middle, and inclining downward toward the circumference.
It covers the superior surface of the cerebellum, and supports the
Occipital Lobes of the brain.
Its anterior border is free and concave, and bounds a large oval opening, the
Incisura Tentorii , for the transmission of the cerebral peduncles.
It is attached, behind, by its convex border, to the transverse ridges upon the inner surface of the occipital bone, and there encloses the
Transverse Sinuses ; in front, to the superior angle of the petrous part of the
Temporal Bone on either side, enclosing the
Superior Petrosal Sinuses .
At the apex of the petrous part of the temporal bone the free and attached borders meet, and, crossing one another, are continued forward to be fixed to the anterior and posterior clinoid processes respectively.
To the middle line of its upper surface the posterior border of the
Falx Cerebri is attached, the straight sinus being placed at their line of junction.
