Falx

Falx is a term used in anatomy to describe a sickle-shaped structure. The term is derived from the Latin word for sickle. In the human body, there are two structures referred to as falx: the Falx cerebri and the Falx cerebelli.

Falx cerebri

The Falx cerebri is a large, crescent-shaped fold of meningeal layer of dura mater that descends vertically in the longitudinal fissure between the cerebral hemispheres. It is named for its sickle-like form. It is attached at the front to the crista galli of the ethmoid bone, and at the back to the tentorium cerebelli.

Falx cerebelli

The Falx cerebelli is a small sickle shaped fold of dura mater, projecting forwards into the posterior cerebellar notch and the vallecula of the cerebellum between the two cerebellar hemispheres.

Clinical significance

The falx cerebri and falx cerebelli are important anatomical landmarks in neurosurgery. They are often involved in cases of intracranial pressure, brain herniation, and meningioma, a type of brain tumor that can occur along the falx cerebri.

See also

• Dura mater
• Meninges
• Cerebellum
• Cerebrum

References

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External links

• WikiMD article on Falx

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