Falx Cerebri and Tentorium Cerebelli: Dural Partitions in the Cranial Cavity
Falx Cerebri: Dividing the Cerebral Hemispheres
The falx cerebri, a crescent-shaped structure, resides in the sagittal plane between the cerebral hemispheres. Its anterior end attaches to the crista galli, and it gradually thickens posteriorly.
Tentorium Cerebelli: Protection for the Posterior Cranial Fossa
The tentorium cerebelli, also known as the tentorium, forms the roof of the posterior cranial fossa. It is a sheet of dura mater that shields the cerebrum from the cerebellum.
Dural Partitions: Separating Brain Regions
Both the falx cerebri and tentorium cerebelli are examples of dural partitions. These structures are formed when the meningeal layer of dura mater projects inward, creating distinct compartments within the cranial cavity.
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