Structure
The tentorium cerebelli is a large fold of the meningeal cranial dura mater that serves to separate the occipital lobe from the underlying cerebellum and brainstem.
Related parts of the anatomy
Anatomical Relations
The tentorium cerebelli has both a left and right side which come together with the falx cerebri at the straight sinus. It provides separation between the cerebrum above and the cerebellum below. The tentorium cerebelli wraps centrally toward the brainstem where it blends in with the dural layers overlying the clinoid processes of the sphenoid bone. This central margin leaves only an oval hole called the tentorial incisure, though which the brain and brainstem are connected. Several prominent dural sinuses are formed at least in part by the tentorium cerebelli, namely the transverse sinuses, the straight sinus, the superior petrosal sinuses, and the confluence of sinuses.
List of Clinical Correlates
- Uncal herniation
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Tentorium cerebelli
The tentorium cerebelli is a horizontal dural partition over the posterior cranial fossa, between the cerebrum and the cerebellum, its free edge at midbrain level.
