falx cerebelli

anatomy

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Last updated

June 26, 2026

Quick Summary

The falx cerebelli is a sickle-shaped fold of the dura mater, one of the protective membranes surrounding the brain. It projects downward between the two hemispheres of the cerebellum. This structure helps to partition the cranial cavity, supporting the brain and separating its major parts. The dura mater itself is a strong, thick membrane that encloses the brain and spinal cord, working with other meninges to protect the central nervous system. The falx cerebelli is distinct from the falx cerebri, which separates the two cerebral hemispheres.12

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meninges
Dura mater
A third, the falx cerebelli, projects downward from the tentorium cerebelli between the two cerebellar hemispheres. The outer portion of the dura mater over the brain serves as a covering, or periosteum, of the inner surfaces of the skull bones.
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A third, the falx cerebelli, projects downward from the tentorium cerebelli between the two cerebellar hemispheres. The outer portion of the dura mater over the brain serves as a covering, or periosteum, of the inner surfaces of the skull bones.
Read More